A patch mounted to a helmet bag from the Royal Canadian air force’s 425th Tactical Fighter Squadron, shows it holds the joint helmet-mounted cueing system (JHMCS) for a CF-18 Hornet pilot at Eielson Air Force Base, Alaska, May 7, 2015, during RED FLAG-Alaska (RF-A) 15-2. The JHMCS combines a magnetic head tracker with a display projected onto a pilot's visor, giving the pilot a targeting device that can be used to aim sensors and weapons wherever the pilot is looking. (U.S. Air Force photo by Staff Sgt. Shawn Nickel/Released)