Modification 5: The purpose of this modification is to post Amendment 00003 to the 80MSFC26R0002 ESSCA II solicitation and to provide an ESSCA II RFP Amendment 00001 to Amendment 00003 Clause and Provision Change Matrix. NOTE: This amendment requires full submission (or resubmission) of proposals from potential Offerors. The primary purpose of Amendment 00003 is to communicate the potential impact of NASA's February 6, 2026, Workforce Directive on the ESSCA II solicitation. This amendment also incorporates the capability to place firm-fixed-price orders under the skills augmentation portion of the ESSCA II scope. Interested parties are encouraged to review file 2026 07 06__Amendment 00003 80MSFC26R0002 Cover Letter with Appendix A,B.pdf and file 2026 07 06_Amendment 00003 80MSFC26R0002 SF30.pdf for additional information. NOTE: As a result of this change, the due date for proposal submission has been extended to August 6, 2026, 2:00 p.m. Central Time. File 2026 07 06__ 80MSFC26R0002 Amendment 00002 to Amendment 00003 Appendix C Change Log.pdf provides a list of changes made between issuance of Amendment 00002 and the issuance of Amendment 00003. Additionally, as part of this amendment the following solicitation files replace prior versions as a result of changes to the 80MSFC26R0002 solicitation, as noted in Block 14 of file 2026 07 06 _Amendment 00003 80MSFC26R0002 SF30.pdf: 2026 07 06__Amendment 00003 80MSFC26R0002 ESSCA II RFP Sections A-I.pdf 2026 07 06 __Amendment 00003 80MSFC26R0002 Sections J-M.docx 2026 07 06__Amendment 00003 80MSFC26R0002 Attachment L-1 Excel Pricing Model.xlsx This posting also provides an ESSCA II Amendment 00001 to Amendment 00003 Clause and Provision Change Matrix. (Note: No changes impacting this matrix were published in Amendment 00002.) This matrix is provided to assist potential offerors in navigating FAR and NFS clause and provision updates resulting from the Revolutionary FAR Overhaul (RFO) and associated Procurement Class Deviations (PCD). This matrix is not an official Agency guidance document but is provided to assist in assessing impacts to the ESSCA II Amendment 00001 which was released February 23, 2026. The matrix may not capture every change resulting from the RFO and associated PCDs. Interested parties are under no obligation to use or rely on the information provided in this matrix. The ESSCA II final 80MSFC26R0002 RFP, inclusive of any amendments that may be published, takes precedence over the information provided in this matrix. Offerors are responsible for downloading their own copy of the amended solicitation in its entirety. Furthermore, it also remains each offeror's responsibility to continue monitoring sam.gov for any future amendment(s) to this solicitation. As part of any resultant proposal submission, offerors shall acknowledge receipt of all solicitation amendment(s) as required by the solicitation. _______________________________________ Modification 4: The purpose of this m…