Marines parachute from an CH-47 Chinook helicopter during Exercise Northern Strike 17 over Camp Grayling Joint Maneuver Training Center, Mich., Aug. 2, 2017. The Marines are assigned to Echo Company, 4th Reconnaissance Battalion, 4th Marine Division, Marine Forces Reserve. Northern Strike 17 prepares Marines for Integrated Training Exercise 2018 and future mobilizations and deployments. Marine Corps photo by Lance Cpl. Imari J. Dubose