Staff Sgt. Dekota Newsom, 30th Civil Engineer Squadron heavy equipment operator, guides Airman 1st Class Markel Hubbert, 30th CES heavy equipment operator, on how deep to dig a trench Nov. 5, 2019, at March Air Reserve Base, Calif. In situations down range, trenches may be used for wiring, laying pipe or even as a fighting position. (U.S. Air Force photo by Senior Airman Clayton Wear)