190724-N-KK394-4021 ATLANTIC OCEAN (July 24, 2019) Crewmembers prepare for a Knifefish unmanned undersea vehicle (UUV) training model to undergo crane operations aboard the Military Sealift Command expeditionary fast transport vessel USNS Spearhead (T-EPF 1) as part of a training exercise enabling mine countermeasure missions (MCM) from an EPF as a vessel of opportunity (VOO). Knifefish is a medium-class mine countermeasure UUV designed for deployment off the littoral combat ship. (U.S. Navy photo by Mass Communication Specialist 2nd Class Anderson W. Branch/Released)