A CH-46E Sea Knight with Marine Medium Tiltrotor Squadron (VMM) 364 flies its last flight to Davis-Monthan Air Force Base, Ariz., Oct. 29. The aircraft was inducted into the 309th Aerospace Maintenance And Regeneration Group, an aircraft gravesite appropriately known as the boneyard. - A CH-46E Sea Knight with Marine Medium Tiltrotor Squadron (VMM) 364 flies its last flight to Davis-Monthan Air Force Base, Ariz., Oct. 29. The aircraft was inducted into the 309th Aerospace Maintenance And Regeneration Group, an aircraft gravesite appropriately known as the boneyard.

Lt. Col. Paul B. Kopacz, left, oncoming commanding officer of now Marine Medium Tiltrotor Squadron (VMM) 364, unravels the new guidon VMM-364 during a change of command and redesignation ceremony aboard Marine Corps Air Station Camp Pendleton, Calif., Oct. 9. This signified the activation of a new squadron. - Lt. Col. Paul B. Kopacz, left, oncoming commanding officer of now Marine Medium Tiltrotor Squadron (VMM) 364, unravels the new guidon VMM-364 during a change of command and redesignation ceremony aboard Marine Corps Air Station Camp Pendleton, Calif., Oct. 9. This signified the activation of a new squadron.

U.S. Marines with Marine Medium Helicopter Squadron (HMM) 364, Marine Aircraft Group 39, 3rd Marine Aircraft Wing (MAW), fly CH-46E Sea Knight helicopters over San Diego, Calif., March 31, 2014. After 47 years of flying the CH-46, HMM-364, “Flies the Barn”, taking off and landing in unison and flying in mass formations, signifying the transition to the MV-22 Osprey. (U.S. Marine Corps photo by Sgt. Keonaona C. Paulo, 3rd MAW Combat Camera/Released) - U.S. Marines with Marine Medium Helicopter Squadron (HMM) 364, Marine Aircraft Group 39, 3rd Marine Aircraft Wing (MAW), fly CH-46E Sea Knight helicopters over San Diego, Calif., March 31, 2014. After 47 years of flying the CH-46, HMM-364, “Flies the Barn”, taking off and landing in unison and flying in mass formations, signifying the transition to the MV-22 Osprey. (U.S. Marine Corps photo by Sgt. Keonaona C. Paulo, 3rd MAW Combat Camera/Released)