The Department of Defense, through the Naval Air Systems Command (NAVAIR), intends to negotiate and award a Cost-Plus Fixed Fee (CPFF) contract for the AIM-9X Systems Improvement Program to Raytheon Missiles and Defense, located in Tucson, Arizona. This contract will support ongoing missile improvement activities, including Non-Recurring Engineering (NRE) for hardware development, operational flight software support, and integration of engineering changes, with a performance period of up to five years. The AIM-9X Program is crucial for enhancing the capabilities of the United States Navy and Air Force, as well as various Foreign Military Sales customers. Interested parties should direct inquiries to Megan Ryce at megan.e.ryce.civ@us.navy.mil, with a copy to Jennifer Vance at jennifer.c.vance2.civ@us.navy.mil, noting that the procurement is intended to be sole source to Raytheon based on FAR 6.301-1.