The Department of Defense, through the Naval Air Warfare Center Aircraft Division, is seeking to negotiate a sole source contract with BAE Systems, Inc. for the procurement of hardware, spares, and incidental services related to Identification Friend or Foe (IFF) products. This procurement includes essential items such as various Digital Interrogators and Common Transponders, which are critical for life cycle engineering and sustainment of military identification systems. The Government plans to issue a five-year Basic Ordering Agreement with BAE Systems, the sole designer and manufacturer of the required equipment, under the authority of 10 USC 3204(a)(1) and FAR 6.302-1, indicating that no other sources can fulfill these requirements. Interested parties must submit their responses via email to Truman Harris at truman.b.harris3.civ@us.navy.mil by the specified deadline.