The Department of Defense, specifically the Space Systems Command (SSC) Military Communications & Positioning, Navigation and Timing (CGK) Division, intends to issue a sole source contract modification to the Boeing Company for the Mobile User Objective System (MUOS) Service Life Extension Phase I. This contract modification will facilitate continued risk reduction and early design efforts, extending performance from August 2, 2025, to February 1, 2026, with the possibility of six additional one-month options extending to August 1, 2026. The Government has determined that competition for this requirement would lead to substantial duplication of costs and unacceptable delays in fulfilling its needs. Interested parties must submit their rationale for consideration by 1:00 PM PDT on April 14, 2025, to the designated contacts, Sandy Roche and Patrick Heppard, at the provided email addresses.