NAVSUP Weapon Systems Support (NAVSUP WSS) Philadelphia is issuing this solicitation as a means of conducting market research to identify eligible parties having an interest in and the resources to support and furnish effort including labor, material, and facilities as may be required to provide repair & upgrade for NSN: 7025-016743794, P/N: 1072288P-6, for the RTAT. The Government intends to solicit and negotiate with only source under the authority of FAR 6.302-1.