Engineering and Technical Support for Research, Development, Testing, and Evaluation

The purpose of amendment 0003 is to accomplish the following: (1) Incorporate the Government responses to Industry

questions as Attachment 12. (2) Extend the proposal due date and time to May 29, 2026, at 11:00am Eastern Standard Time. Please note, the question and answer period closed on April 22, 2026. No further

questions will be answered. Amendment 0002: the purpose of this amendment is to accomplish the following: (1) Incorporate a revised RETS IDIQ Performance Work Statement (PWS), dated May 6, 2026, as attachment 1. (2) Incorporate a revised RETS TO 0001 PWS dated May 12, 2026, as attachment 2. (3) Incorporate the revised Task Order 0001

Pricing Template as Attachment 8. (4) Update FAR 52.212-1 and FAR 52.212 Addendum as Attachment 9. (5) Update Task Order 0001 Instructions as Attachment 10. (6) Incorporate the Government responses to Industry

questions as Attachment 11. (7) Update FAR Clause 52.216-22 Indefinite Quantity. (8) Update FAR Clause 52.212-4 Contract Terms and Conditions - Commercial Products and Commercial Services. (9) Incorporate revised Attachment 07 Past Performance Questionnaire.(10) Update Section H Special Contract

Requirements Clauses. (11) Extend the proposal due date and time to May 27, 2025, at 11:00am Eastern Standard Time. (12) All revisions are highlighted in light blue. Amendment 0001: The purpose of this amendment is to Update 52.212-1