A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 13th Fighter Squadron, Misawa Air Base, Japan, taxis out during Exercise Northern Edge 2017, at Eileson Air Force Base, Alaska, May 4, 2017. Northern Edge is Alaska’s largest and premier joint training exercise designed to practice operations, techniques and procedures as well as enhance interoperability among the services. Thousands of participants from all the services—Airmen, Soldiers, Sailors, Marines and Coast Guard personnel from active duty, Reserve and National Guard units—are involved. - A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 13th Fighter Squadron, Misawa Air Base, Japan, taxis out during Exercise Northern Edge 2017, at Eileson Air Force Base, Alaska, May 4, 2017. Northern Edge is Alaska’s largest and premier joint training exercise designed to practice operations, techniques and procedures as well as enhance interoperability among the services. Thousands of participants from all the services—Airmen, Soldiers, Sailors, Marines and Coast Guard personnel from active duty, Reserve and National Guard units—are involved.

An F-35B Lightning II with Marine Fighter Attack Squadron 121 “Green Knights” flies alongside a KC-130J Super Hercules with Marine Aerial Refueler Transport Squadron 352 over Southern California, March 8, 2016. The two F-35Bs completed additional training after successfully conducting an aerial refuel with VMGR-352. - An F-35B Lightning II with Marine Fighter Attack Squadron 121 “Green Knights” flies alongside a KC-130J Super Hercules with Marine Aerial Refueler Transport Squadron 352 over Southern California, March 8, 2016. The two F-35Bs completed additional training after successfully conducting an aerial refuel with VMGR-352.

An F-35B Lightning II Joint Strike Fighter, Marine Fighter Attack Squadron 121, 3rd Marine Aircraft Wing, performs a conventional take-off at the Strategic Expeditionary Landing Field during Exercise Steel Knight 2016 at Marine Corps Air Ground Combat Center Twentynine Palms, California, Dec. 11, 2015. This year’s iteration of Exercise Steel Knight works to advance 1st Marine Division’s warfighting capabilities, to include interoperability between the ground and air forces and integration of the F-35B. - An F-35B Lightning II Joint Strike Fighter, Marine Fighter Attack Squadron 121, 3rd Marine Aircraft Wing, performs a conventional take-off at the Strategic Expeditionary Landing Field during Exercise Steel Knight 2016 at Marine Corps Air Ground Combat Center Twentynine Palms, California, Dec. 11, 2015. This year’s iteration of Exercise Steel Knight works to advance 1st Marine Division’s warfighting capabilities, to include interoperability between the ground and air forces and integration of the F-35B.