Cpl. Andrew Mills, Marine Air Group 41, Marine Air Wing Support Squadron 471 Detachment Bravo puts together a water filtration system at Exercise Northern Strike 22 in Grayling, Mich. on Aug. 4, 2022. Northern Strike is serving as a testing ground for the Marine Corp expeditionary readiness. Concepts proven here will be documented and implemented across the force. (U.S. Army National Guard photo by Sgt. Drake Chandler)