Engineering Services support contract with BAE Corporation (81413) for the upgrqde of the Digital LRU-3C (5865-01-287-6182EW) in support of the AN/ALR 56-C Ssytem. Requirement is sole source based on FAR 6.302-1, Only one responsible source can satisfy the government's requirement. Period of Performance is 12 months. Export control applies. No commercial application and no commercial solicitation procedures.