This solicitation will be for repair NIINs only. The anticipated LTC is in support of the WSN-7 Inertial Navigation system and is used on Surface ships. This solicitation will be solicited for award o... This solicitation will be for repair NIINs only. The anticipated LTC is in support of the WSN-7 Inertial Navigation system and is used on Surface ships. This solicitation will be solicited for award of a firm fixed price contract for the listed NSNs. The approved sole source is Northrop Grumman CAGE 03956. The NSNs will have variable quantities for a five-year period with no option years. The FOB: Origin; Inspection/Acceptance: Origin.