The Transportation Security Administration (TSA) has a requirement for Test and Evaluation Support Services (TESS) in response to the need for operational test and evaluation (OT&E) of security technology equipment. TESS supports TSA's responsibilities in all modes of transportation, and supports stakeholders and organizations associated with transportation security. TESS contractors perform integrated evaluation strategy responsibilities, including all data collection analysis services that support overall Government objectives. Additional responsibilities include identifing necessary data sources, including field testing, modeling and simulation, special studies, and any other relevant sources (i.e., commercial standards, testing by other US government agencies, foreign governments, etc.) to ensure credible, timely, adequately scoped evaluation products that maximize use of test resources.