U.S. Marine Corps Lt. Col. Paul B. Kopacz, commanding

U.S. Marine Corps Lt. Col. Paul B. Kopacz, commanding officer, Marine Medium Tiltrotor Squadron 364, 3rd Marine Aircraft Wing, conducts pre flight checks of the MV-22 Osprey at Camp Pendleton, Calif., April 23, 2015. The flight signifies the transitioning from the CH-46 Sea Knight to the MV-22 Osprey as the unit attained its "Safe For Flight" endorsement in order to work towards it Initial Operating Capability. (U.S. Marine Corps photo by Cpl. Ismael E. Ortega, MCIWEST-MCB CamPen Combat Camera/Released)