The National Aeronautics and Space Administration (NASA) intends to modify the existing Hydrogen Electrical Power System (HEPS) contract to incorporate an automatic shutoff feature for the reactant gas supply to the Tipping Point Rocket Locker Hardware. This modification is deemed necessary to enhance safety and operational efficiency, and NASA plans to issue a sole source contract to Teledyne Energy Systems, Inc., citing that only one responsible source can fulfill the agency's requirements. Interested organizations are invited to submit their capabilities and qualifications by email to Roxana Romero and Lonna Rumsey by 12:00 PM PST on January 8, 2025, for evaluation purposes, as the government retains discretion over the competitive nature of the acquisition.