U.S. Marines with Marine Light Attack Helicopter Squadron 773, Marine Aircraft Group 49, 4th Marine Aircraft Wing, Marine Forces Reserve, conduct maintenance on an AH-1Z Cobra belonging to HMLA-773 on an airstrip at Marine Air Ground Combat Center Twentynine Palms, California, June 21, 2017. The squadron prepared for night missions in support of the 2nd Battalion, 25th Marine Regiment, 4th Marine Division, MARFORRES, final battalion exercise of Integrated Training Exercise 4-17. (U.S. Marine Corps photo by Imari J. Dubose)