This document provides a draft request for proposal for the Directorate for Test Resources Instrumentation Support Contract. The Missile Defense Agency is seeking proposals for instrumentation support services on an indefinite delivery/indefinite quantity contract with both fixed price and cost reimbursement contract line items. The base period of performance is five years with five optional one-year extensions. This is a 100% small business set-aside requiring proposals by May 10, 2021. Award is anticipated by January 19, 2022. Questions regarding the draft RFP are due by January 25, 2021 and requests for organizational conflict of interest determinations are due by January 31, 2021. The agency will provide virtual site visits in January and one-on-one meetings in early February to facilitate offeror understanding of requirements.