Sgt. Eric Jerabek, a heavy equipment operator with Headquarters Battery, 14th Marine Regiment, 4th Marine Division unloads gravel from an excavator into a wheel tractor-scraper to be laid onto the runway during Innovative Readiness Training, Old Harbor, Alaska, Aug. 5, 2018. This year marks the completion of the 2,000-foot extension of Old Harbor’s runway. (U.S. Marine Corps photo by Lance Cpl. Tessa D. Watts)