70Z02325R9310000 SOW.pdf

STATEMENT OF WORK (SOW)

LONG RANGE COMMAND AND CONTROL AIRCRAFT

LEASE

1. General Information.

1.1. Title of Project: Lease of a Long-Range Command and Control Aircraft (LRCCA)

1.2. Scope of Work: The contractor shall provide all resources necessary to accomplish the tasks and deliverables described in this Statement of Work (SOW). The contractor shall provide a Gulfstream G-550 aircraft configured to serve as a Command and Control (C2) aircraft to meet Department of Homeland Security (DHS) and United States Coast Guard (USCG) requirements. The primary location of the aircraft will be U.S. Coast Guard Air Station Washington (ASW), located at Ronald Reagan Washington National Airport (DCA).

1.3. Background: The primary mission for ASW is the rapid, safe, and efficient transportation of passengers around the globe. The lease aircraft shall be minimally configured to provide global dual-band connectivity to facilitate unrestricted communication capabilities that provide the flexibility to maintain awareness of emergent situations, enable operational tasking, and perform normal duties while airborne. DHS is the primary user of the LRCCA aircraft and requires safe and reliable deployment with communication capabilities adherent to the policies of the United States of America. The USCG is required to safely and reliably deploy to destinations throughout the world to manage missions mandated by U.S. Statute including Maritime Security, Enforcement of Laws and Treaties, Maritime Safety, Protection of Natural Resources, Maritime Mobility, and National Defense. This transport will be used to respond to national and international emergencies in which DHS and USCG resources are needed, including environmental disaster relief operations (hurricane, flood, earthquake), marine environmental responses, major search and rescue operations, mass migrant interdictions, etc. Therefore, the use of this transport may incur greater wear and tear during the lease period than would be incurred via normal corporate operations, as it may be required to fly up to 50 hours per month.

2. Contractor Requirements

2.1. Contractor Furnished Property

2.1.1. The contractor shall furnish all facilities, materials, equipment, and services necessary to fulfill the requirements of this SOW, except for the United States Government (USG) Furnished Equipment (GFE) specified herein. Tow tractor required to move the aircraft already owned by the Coast Guard will be available at ASW in support of this contract. The leased aircraft shall not require the USG to provide any aircraft-specific ground support equipment or tooling and shall be compatible with all industry standard G-V ground support equipment at ASW.

2.2. Aircraft Requirements (CLIN 0001/0002 and all related options are covered via Sect. 2.2 thru 2.5)

2.2.1. The contractor shall provide a G-550 aircraft for lease that is flyable by Coast Guard pilots and aircrew under the Gulfstream G-V aircraft pilot type rating designation. The aircraft configuration required for this is explained in subsequent parts of this section.

2.2.2. The contractor shall provide an aircraft that does not require ASW pilots and aircrew to obtain another type rating certification or differences training.

2.2.3. The contractor provided aircraft shall be supportable using the G-550 ground support equipment at ASW. Any additional equipment required to support the aircraft shall be the provided by the contractor. The lease aircraft shall be a U.S.-registered, commercial passenger, non-developmental, worldwide airspace access capable jet aircraft, with no damage history.

2.2.4. The contractor shall deliver an aircraft compliant to Federal Aviation Administration (FAA) next generation (ADS-B in & ADS-B out) mandates, and the North Atlantic Track (NAT) Future Air Navigation System (FANS) 1/A+, i.e., capable of worldwide airspace access without restriction throughout the term of the lease. The contractor shall not make further modifications to meet this requirement after delivery of the aircraft.

2.2.5. The aircraft shall be able to operate at 95% availability, considering scheduled and unscheduled maintenance, performance of FAA Airworthiness Directives, manufacturer-recommended inspections, manufacturer approved maintenance, or aircraft modifications. The Contractor shall provide an aircraft that is no greater than 20 years old (meaning in service date of Jan 1st, 2005, or later), has no greater than 4,000 hrs, and no greater than 3000 landing cycles.

The aircraft shall have an N registered rating throughout its entire life. No major maintenance or service shall be due within the first 10 months of the lease start date.

2.2.6. The contractor shall provide an aircraft with the following cabin configuration and equipment.

Upholstery, equipment or markings shall be in proper working and operational order and shall not bring discredit to the DHS/USCG service.

2.2.6.1. 115-volt 60 Hz outlets shall be provided in the passenger compartment at each seating location. Due to power demand requirements, the dual 60 Hz converter ASC is required.

2.2.6.2. Provide an environmental control system which provides cooling/ heating for the cabin and sufficient cooling for proper operation of avionics components on the ground using only Auxiliary Power Unit (APU) power under all conditions.

2.2.6.3. Two vacuum toilet lavatories capable of supporting crew of five (5) and 12 passengers.

2.2.6.4. Potable water supply, food storage and meal preparation space shall be able to support crew of five (5) and 12 passengers for at minimum one (1) meal per flight.

Galley shall include microwave and convection oven capabilities, a refrigerator, a sink with hot and cold running water, and a coffee maker.

2.2.6.5. The contractor shall provide a plane with executive-style seating and accommodate at least 12 passengers and five (5) crewmembers. The flight deck shall be configured to accommodate three (3) crewmembers to include a jump seat to accommodate a Flight Engineer. The cabin shall have a minimum of 14 passenger seats, two (2) seats of which are occupied by remaining crewmembers.

2.2.6.6. The contractor shall provide a plane with a seating compartment that can be physically closed off from the rest of the aircraft that has four (4) seats and work surfaces for each. There are no soundproofing special requirements.

2.2.6.7. The contractor shall maintain the survival and support equipment in accordance with (IAW) vendor instructions and IAW Federal Aviation Regulation (FAR) Part

145. The contractor shall maintain documentation IAW FAR (Aviation) Part 91 and 135, Subpart J, annotating required inspections and maintenance actions accomplished.

Survival and life support equipment is defined as; emergency medical kits (to include AED), life vests, life rafts, emergency oxygen/smoke masks, and Enhanced Vision Assurance System (EVAS).

2.2.7. The aircraft shall be equipped with the following avionics capabilities:

2.2.7.1. Navigation equipment shall be certified for terminal (Required Navigation

Performance (RNP 0.3), enroute (RNP-4 and Basic Area Navigation), oceanic (RNP-

10) navigation and global RVSM operation.

2.2.7.2. Dual Global Positioning System (GPS) certified for IFR enroute.

2.2.7.3. Automatic Direction Finder (ADF) and Dual Very High Frequency Omni

Directional Radio Range/Distance Measuring Equipment /Instrument Landing System (VOR/DME/ILS) systems with FM immunity.

2.2.7.4. Dual High Frequency (HF) aeronautical radios connected to the FMS remote tune capability and with Selective Calling Radio System (SELCAL).

2.2.7.5. Dual standard aeronautical-band radios with 8.33 kHz frequency spacing.

2.2.7.6. Enhanced ground proximity warning system (EGPWS) or Terrain Awareness and Warning System (TAWS).

2.2.7.7. Color weather radar with turbulence detection.

2.2.7.8. Traffic Collision Avoidance System (TCAS) II and enhanced Mode S compliant with European airspace requirements.

2.2.7.9. Wide Area Augmentation System (WAAS) enabled Localizer Performance with Vertical (LPV) guidance landing assistance.

2.2.7.10. Required Navigation Performance (RNP) Authorized Required database and service letter.

2.2.7.11. A Heads-Up Display / Enhanced Vision System (HUD/EVS) at the pilot flight station.

2.2.7.12. Cockpit 110V AC power supply for Aviation Mobile Device charging.

2.2.8. The contractor shall ensure the plane has FAA and European Aviation Safety Administration

(EASA) certified Integrated Navigational Data Service (INDS).

2.2.9. The following Commercial Satellite COMSAT and communication equipment shall be purchased and installed on the aircraft for video, voice, and data communications.

2.2.9.1. The contractor shall provide the aircraft with the aero version of the Iridium system and Iridium service for voice communications. The cabin voice capability shall be operable from all seats with varied network connection options.

2.2.9.2. The contractor shall provide the aircraft with a global Ku or Ka satellite service capability with the subscription service included in lease pricing.

2.2.9.2.1. The Ku or Ka service coverage shall be at least a ‘business class service’ that provides for unlimited data and voice capability.

2.2.9.2.2. The Ku or Ka service shall allow for bandwidth allocation and have customer service representation available for troubleshooting inflight.

2.2.9.2.3. The Ku or Ka service shall use the provider on either a GEO or LEO network. Starshield/Starlink aircraft are preferred.

2.2.9.2.4. The satellite service shall have a wi-fi ‘hot spot’ capability within the cabin.

2.2.9.2.5. The Ku/Ka service shall have global coverage:

2.2.9.2.6. The contractor shall provide the aircraft with a high-speed Commercial Satellite (COMSAT) data suite.

2.2.9.2.7. The COMSAT data suite may use Ku/Ka or equivalent.

2.2.9.2.8. The COMSAT may be either Ku or Ka band. The COMSAT suite shall use aero L-Band (Swift Broadband) as a backup.

2.2.9.2.9. The Ku or Ka band shall be capable of providing a minimum of 16 Mbps uplink (to the aircraft) within the entire Ku or Ka coverage area.

2.2.9.2.10. The Ku and Ka band shall have a burstable data rate greater than

2 Mbps outbound. Ku or Ka band latency shall not be more than 720ms on average based on hourly sampling under clear sky conditions on the COMSAT suite when it is not passing LAN traffic.

2.2.9.2.11. The contractor shall provide public IP for all COMSAT suite needs to allow the DHS/Coast Guard to tunnel traffic through the Internet to the DHS/Coast Guard data networks.

2.2.9.2.12.The COMSAT suite must provide global coverage that meets the bandwidth requirements between 70N and 70S and provide at least 75% coverage and operation of either Ku or Ka between 70N to 70S.

2.2.9.2.12. 2.2.9.2.12. The COMSAT suite must provide global coverage that meets the bandwidth requirements between 70N and 70S and provide at least 75% coverage and operation of either Ku or Ka between 70N to 70S.

2.2.9.3. The Communication system shall provide the capability for wideband protected voice, data, video and imagery transmission and reception worldwide to include global flights.

2.2.9.4. The passenger compartment shall have data capability to support standard office operations to include a stand-alone printer. The contractor shall provide space, power and cooling for additional DHS/USCG installed and managed equipment.

2.2.9.5. A Satellite television system shall be available to provide 24-hour access to global commercial news services with standard television screen, a minimum of 17 inches.

2.2.9.6. The contractor shall install a wired network that uses standard networking RJ-45 connections at each passenger position. The wired network shall aggregate using a currently supported Cisco series switch with the most current Cisco IOS, if required.

2.2.10. The Government Furnished Equipment (GFE) shall be installed on the aircraft by the USG

IAW the GFE list attached to this RFP. GFE will be added to the Configuration Status Accounting Report of the aircraft in MyCMP by the contractor with corresponding FAA Form 8130-31 as applicable.

2.2.11. Communications systems shall provide isolation to ensure that classified voice / data communications are not captured by the cockpit voice recorder system, and to preclude inadvertent or undesired access to the encryption key, classified, or sensitive information.

2.2.12. After installation of classified communications equipment, the aircraft shall pass TEMPEST testing in no more than one week, to be performed by the USG.

2.3. Maintenance

2.3.1. The Contractor shall schedule all depot-level maintenance performed at a Gulfstream-approved maintenance facility. The Contractor shall provide a maintenance plan (CDRL A001) which shall use FAA- licensed Airframe and Powerplant personnel from ASW IAW FAR Part 65 Subpart D, maintenance personnel to perform field-level maintenance to include removal and replacement of line- replaceable units for which the contractor shall provide training, manuals and special tools as applicable.

2.3.2. The Contractor shall schedule (in coordination with the Coast Guard), all required calendar, hourly and unscheduled depot maintenance IAW FAA requirements or any other USG authority. The aircraft shall be kept in a secure area with controlled access. The Coast Guard will remove classified equipment prior to the aircraft entering maintenance if the service center is unable to store classified components.

2.3.3. The contractor shall enroll the aircraft in the manufacturer-approved maintenance warranty program, if not done so already. ASW will track hours through Asset Logistics Management Information System (ALMIS), Electronic Asset Logbook. The contractor shall utilize the manufacturer-approved maintenance warranty program, currently the Computerized Maintenance Program (MyCMP), to track status. The assessment will be at the end of the base period of performance and each option period.

2.3.4. The contractor shall provide Gulfstream-certified 24-hour aircraft technical and logistics support. The logistics support system shall cover both minor and major maintenance and repair capability, such as technical support for evaluation and troubleshooting of recurring problems, Auxiliary Power Unit (APU) overhaul, engine overhaul, avionics program support, mandatory airworthiness directives/instructions for continued airworthiness, configuration status accounting reports, and mandatory service bulletins. This support shall be easily accessible from worldwide locations. Technical support shall be included in the lease price.

2.3.5. The contractor shall provide a COMSAT suite technical support hotline to the Coast Guard, minimally from Monday to Friday, 0800 to 1700 eastern standard time. This may be a service provided by sub-contractor, manufacturer or integrator. The hotline shall be staffed by individuals who can start trouble shooting triage to the COMSAT system while it is in CONUS or abroad.

2.3.6. The contractor shall utilize a 24-hour Gulfstream certified rapid logistics support service to respond to unscheduled maintenance requirements globally.

2.3.7. The Contractor shall supply all parts which may require replacement. For grounding discrepancies at or away from home station, parts shall be supplied within 24 hours of the event.

2.3.8. The contractor shall be responsible for all corrosion found during limited and/or major schedule inspections, or in areas not normally accessible during routine maintenance.

2.3.9. All other unspecified/uncovered maintenance efforts shall be treated as Over and Above (CLIN 0003 and related options).

2.4. Technical Data (CDRL A002).

2.4.1. The Contractor shall provide the following subscription services with the monthly cost of the leased aircraft:

2.4.1.1. Iridium or equivalent voice and data service with internet access IAW SOW 2.2.9.1.

2.4.1.2. Global Ku or Ka satellite service subscriptions.

2.4.1.3. L-band Swift broadband service subscriptions.

2.4.1.4. Satellite based television subscriptions of commercial news services.

2.4.1.5. FAA-certified worldwide Honeywell and Jeppesen INDS (Integrated Navigational Data Service) subscriptions for the Honeywell Planeview/Primus Elite DU-885 upgrade.

2.4.1.6. Honeywell RNP-AR subscription and database validation letters.

2.4.1.7. Commercial Datalink/Global Data Center subscriptions.

2.4.1.8. Subscriptions for Enhanced Ground Proximity Warning System (EGPWS) or Terrain awareness and warning system (TAWS).

2.4.1.9. PlaneBook Subscriptions, (which includes electronic flight manuals), Jeppesen Navigational electronic applications, and any required periodic updates shall be provided.

2.4.1.10. The contractor shall provide electronic flight manuals and navigational charts.

Two hardcopies shall be provided for use in the aircraft.

2.4.2. Technical Manuals (TMs) (CDRL A003).

2.4.2.1. TMs for the aircraft and manufacturer's aircraft components and systems shall conform to current commercial specifications outlined by Air Transport Association Specifications (ATAS) and be reviewed for acceptability. Any furnished electronic checklist or aircraft performance database shall reflect applicable technical data. Source data shall be provided to update the crash and rescue Technical Order. Manuals and instructions for continued airworthiness are required to include structural repair, concurrent servicing, and nondestructive inspection. Manuals for corrosion control are desired. TMs shall reflect the final aircraft configuration and operating procedures.

2.4.3. Weight and Balance Data (CDRL A004).

2.4.3.1. The contractor shall provide weight-and-balance data for the leased aircraft in appropriate Automated Weight and Balance System (AWBS) format.

2.4.3.2. The contractor shall provide all weight and balance manuals to include Form Fs for all passenger configurations and installed equipment.

2.4.4. Other Required Documentation

2.4.4.1. The aircraft shall have a current FAA airworthiness certificate (CDRL A005).

2.4.4.2. The aircraft shall include traceable documentation indicating it has been maintained to FAA maintenance regulations throughout its service life.

2.5. Safety and Survivability.

2.5.1. The aircraft shall perform all assigned missions IAW FAR Part 25 Airworthiness Standards.

The contractor shall ensure that a cockpit voice and flight data recorder is installed that meets FAA survivability standards.

2.6. Training.

2.6.1. The Contractor shall provide training of operators, attendants and maintenance personnel for the aircraft type provided. This training shall serve to maintain rating and certification of G-V certfied ASW personnel.

2.6.2. The contractor shall allow the Coast Guard to exercise training Contract Line-Item Numbers (CLINs) before delivering the aircraft to ASW.

2.6.3. The following training courses shall be options, to be used as needed for the base period, and each option period of the contract, priced separately. (CDRL A010)

Description

0004 G-550 Pilot Initial (22 day)

0005 G-V to G-550 differences training for pilots (5 day)

0006 Pilot recurrent training (5 day) 0007 Full EVAS Training (pilots) (.5 day) 0009 CPDLC - Controller Pilot Data Link Communications course (pilots) Online only 0010 ADS-B course (pilots) Online only 0011 NextGen Communications/Navigation (pilots and maintainers) Online only 0012 Recurrent flight engineer training (held with pilot recurrent) (5 days)

0013 4-hour block of sim time (pilots and flight engineer)

0014 Corporate Cabin Attendant Initial (4.5 days)

0015 G-550 Maintenance Initial (15 day)

0016 G-550 Maintenance Differences (5 day)

0017 G-550 Maintenance Recurrent/update (5 day)

0018 G-550 Maintenance Advanced Troubleshooting (5 day)

Gulfstream GV-SP (RRD BR710) Maintenance Familiarization; (5 days.)

(formally known as Maintenance Manager Course)

0020 Rolls Royce Engine Course (specifically put it on by RR/not FSI) (5 day)

0021 G-550 Rolls Royce BR710 Engine (5 day)

0022 G-550 Avionics Initial (20 day)

0023 G-550 5th Week Avionics (5 day)

0024 G-550 Planeview Avionics Initial (8 day) 0025 G-550 International Procedures Initial 0026 G-550 International Procedures LOFT 0027 G-550 Advanced Energy Management 0028 G-550 Advanced CRM LOFT 0029 G-550 Go-No-Go Initial

2.6.4. The contractor shall arrange for simulator training times to occur between 0700 and 2200, not to exceed ten hours per day, for the following training courses.

2.6.4.1. Initial type certification or applicable differences training for pilots and Flight engineer.

2.6.4.2. Pilot recurrent training.

2.6.4.3. Flight Engineer recurrent training.

2.6.5. Required simulator time shall be priced into the applicable training course options.

2.7. Note: Required training shall be conducted at the nearest applicable training facility to ASW within the contiguous U.S.

2.8. Deconfiguration.

2.8.1. The contractor shall remove all Coast Guard markings from the aircraft and return all installed

Coast Guard equipment to ASW at the end of the lease period.

2.8.2. The Coast Guard will move the aircraft at its expense to the commercial depot the contractor selects (within North America) for the physical deconfiguration. Such movement will be made in a timely manner upon request, but not later than five (5) business days after contract completion or request (whichever is later).

2.8.3. The Coast Guard will have personnel at the depot-level to assist in providing appropriate security control for any classified materials removed from the aircraft.

2.8.4. Coast Guard personnel at deconfiguration will take immediate possession of GFE when removed from the aircraft.

3. U.S. Government (USG) Responsibilities.

3.1. T The USG will provide parts storage space required for routine maintenance and inspections, desk space, and internet access for a contractor-owned computer. The Government will provide aircraft usage information and details of maintenance performed by the Government. USG will provide fuel and oil.

4. Travel.

4.1. Contractor travel to accompany the aircraft to depot-level maintenance can be aboard the aircraft.

Any additional travel costs incurred by the contractor will not be reimbursed by the USG.

5. Contractor Requirements.

5.1. The Contractor shall hold a kickoff meeting (CDRL A006) and provide meeting minutes (A007) . Additionally, the contractor shall provide a project plan (CDRL A008). Kickoff meeting shall be at contractor’s facility.

5.1.1. At a minimum the kickoff meeting shall introduce the company organization, the assigned Project manager and list all primary POCs supporting this lease activity as well as list of personnel requiring access to USG facility. Delivery status of W&B data, any technical data, maintenance plan, ongoing maintenance, deferred maintenance discrepancies, and status of the aircraft.

5.1.2. The project plan shall define the communications plan within your company and the daily maintenance management activities. The communication path for aircraft discrepancies at home unit and while away. Exactly how will aircraft grounding discrepancies be managed and the support plan for obtaining crew and parts.

5.2. The Contractor shall submit weekly reports to the USG (CDRL A009). The weekly report shall identify any personnel changes, status of any ongoing maintenance actions, status of upcoming maintenance requirements, maintenance plan changes, parts shipment status as required for emergent issues or for planned maintenance, any items impacting aircraft availability or the aircrafts connected services. Invoicing actions requiring attention and/or any programmatic concerns. .

5.3. Contractor Personnel.

5.3.1. The contractor shall provide a primary Project Manager (PM) who shall be responsible for all contractor work performed under this SOW. An alternate PM shall be assigned during periods of non-availability of the PM. The PM shall be available to the Coast Guard Program Manager, Contracting Officer or Contracting Officer’s Representative (COR) via telephone at all times.

The PM shall respond to a request for discussion or resolution of technical problems within one hour of notification.

5.3.2. The PM shall be responsible for coordinating the execution of aircraft modification, maintenance and support functions of this contract. These duties include but are not limited to coordination and logistical support for parts delivery; coordination and scheduling of training, aircraft modifications and depot level repairs; tracking and entering of maintenance actions into a FAA approved maintenance database; and update and delivery of any technical data supplied under this contract.

5.3.3. The PM shall hold a current FAA Airframe and Powerplant certification IAW FAR Part 65, Subpart D, and shall be responsible for maintenance performed for the aircraft type provided under this contract. The PM shall have a minimum of 4 years, Large Cabin, Gulfstream experience.

5.3.4. The PM shall be a single point of contact for the Coast Guard. The name of PM, and the name(s) of any alternate(s) who shall act on behalf of the contractor in the absence of the PM, shall be provided to the USCG as part of the contractor's proposal. During any absence of the

PM,

only one alternate shall have full authority to act for the contractor on all matters relating to work performed under this SOW.

5.3.5. On-site support shall be provided for a minimum of 8-hours per week (after the aircraft is delivered), and during any aircraft maintenance activities (not including routine servicing).

Office space with storage space, desk space and internet access for a contractor-owned computer will be provided by the Coast Guard at ASW.

5.4. Hours of Operation.

5.4.1. Contractor employees shall perform all work between the hours of 0700 and 1600 Eastern

Time, Monday through Friday (except Federal holidays). However, there may be occasions when contractor employees shall work other than normal business hours, including weekends and holidays, to fulfill requirements under this SOW at no additional cost to the USG. The contractor shall comply with USG regulations regarding employee access to USG facilities and conduct therein IAW HSAR 3052.204-71.

6. Security Requirements.

6.1. Performance of the requirements under this agreement may require contractor access to Secret information. As such, the PM and alternate PM shall have a current clearance appropriate to the level of security. Procedures for handling tracking, marking, and storing of classified material will be outlined in the DD Form 254.

The contractor shall obtain and hold clearances for the PM. All costs associated with obtaining clearances for contractor-provided personnel will be the responsibility of the contractor. Further, the contractor will be responsible for the actions of all individuals provided to work under this contract. If damages arise from work performed by contractor-provided personnel under the auspices of this contract, the contractor will be responsible for all resources necessary to remedy the incident.

7. Period of Performance

7.1 The period of performance is a four-month base period and TBD one-month options up to eight months total.

Base Period 06/01/2025 - 09/30/2025 - CLIN 001 Month to Month Option 10/1/2025 - 05/31/2026 - CLIN 002

APPENDIX A: DELIVERABLES

The contractor shall deliver the deliverables listed in the following table on the dates specified

DEL. # MILESTONE/

DELIVERABLE

CLIN RFP

REFERENCE

DATE OF

COMPLETION/

DELIVERY

Project Start (PS) At TOA

At TOA

A001 Maintenance Plan 001, 002 2.3.2 At least 1 day prior to Kickoff meeting

A002 Technical Data 001, 002 2.4 NLT Kickoff Meeting and maintained over POP as required

A003 Technical Manuals 001, 002 2.4.2 NLT Kickoff Meeting, and maintained over contracted POP.

A004 Weight and Balance Data

001, 002 2.4.3 At least 1 day prior to kickoff meeting.

A005 FAA Certificate 001, 002 2.4.4 At TOA

A006 Kickoff Meeting 001 5.1 NLT 3 days after TOA

A007 Meeting minutes 001 5.1 3 workdays after meeting

A008 Project Plan 001 5.1 At kickoff meeting

A009 Weekly Report 001, 002 5.2 5 days after TOA and weekly thereafter

A010 Training 004 - 029 2.6.3 After TOA and as requested by the

USG.