As seen through a night-vision device, Army Special Forces soldiers participate in a night infiltration and exfiltration exercise during Southern Strike 17 at the Gulfport Combat Readiness Training Center, Miss., Oct. 26, 2016. Southern Strike 17 is a total force, multi-service training exercise hosted by the Mississippi Air National Guard’s Combat Readiness Training Center in Gulfport, Miss., from Oct. 24 through Nov. 4, 2016. The exercise emphasizes air-to-air, air-to-ground and special operations forces training opportunities. Air Force photo by Senior Airman Trevor T. McBride