***This requirement is for SEAPORT NXG MAC HOLDERS ONLY and will be competed via Small Business Set Aside. No other offers will be considered. SeaPort MAC holders will need to register for PIEE accounts in order to receive solicitations and submit proposals/offers.*** The Department of the Navy, Naval Information Warfare Center (NIWC) Pacific, Codes 41160, Tactical Data Links Command and Control, and 41140, Tactical Data Links Monitoring Systems, have a requirement to provide life-cycle engineering and technical assistance required for Tactical and Communications Data Link systems and related equipment in the sustentation of the Tactical and Communications Data Links Capabilities Based In-Service Engineering Agent (CB-ISEA). The NAICS code for this procurement is 541330 with a size standard of $47 (millions of dollars). *Note: The deadline for submission of questions is 26 June 2026 at 14:00 PDT. The proposal deadline is 20 July 2026 at 14:00 PDT.