An MV-22B Osprey with Marine Medium Tiltrotor Squadron 363, 3rd Marine Aircraft Wing, prepares to take flight aboard Marine Corps Air Station Miramar, Calif., Nov. 1. This is VMM-363's first Osprey flight since they converted to a Marine Medium Tiltrotor Squadron from a Marine Heavy Helicopter Squadron. - An MV-22B Osprey with Marine Medium Tiltrotor Squadron 363, 3rd Marine Aircraft Wing, prepares to take flight aboard Marine Corps Air Station Miramar, Calif., Nov. 1. This is VMM-363's first Osprey flight since they converted to a Marine Medium Tiltrotor Squadron from a Marine Heavy Helicopter Squadron.