Seahawk Signal Navy Petty Officer 2nd Class Keifer Galbraith, an enlisted landing signalman assigned to the Military Treatment Facility on the Military Sealift Command hospital ship USNS Mercy, marshals an MH-60S Seahawk assigned to Air Test and Evaluation Squadron 21 of Naval Air Station Patuxent River, Md., to depart from the ship’s flight deck Apr. 26, 2021 in waters off San Diego. SHARE: Download: Full Size (0.64 MB) Credit: Navy Petty Officer 3rd Class Jake Greenberg VIRIN: 210426-N-DA693-1075C.JPG Photo Gallery