Distant Frontier

An F-15C Fighting Eagle assigned to the 67th Fighter Squadron conducts flight operations during exercise Distant Frontier on Joint Base Elmendorf-Richardson, Alaska, May 18, 2017. Distant Frontier is a unit-level training iteration designed to sharpen participants’ tactical combat skills and develop interoperable plans and programs across the joint force. (U.S. Marine Corps Photo/1st Lt. Melissa M Heisterberg)