Crowley Inc., Jacksonville, Florida (N3220523C2506), is being awarded a $24,269,306 modification under a previously awarded firm-fixed-price contract (N3220523C2506) to exercise a six-month option under Federal Acquisition Regulation 52.217-9 (P00028) for the operation and maintenance of six government-owned surveillance ships (T-AGOS) and missile range instrumentation (T-AGM) vessels. The vessels under this award include USNS Victorious (T-AGOS 19), USNS Able (T-AGOS 20), USNS Effective (T-AGOS 21), USNS Loyal (T-AGOS 22), USNS Impeccable (T-AGOS 23), and USNS Howard O. Lorenzen (T-AGM 25). Military Sealift Command, Norfolk, Virginia, is the contracting activity.