U.S. Air Force Senior Airman Gregory Gilkes checks a light cart's oil level March 17, 2015, at the New Jersey Air National Guard's 177th Fighter Wing in Egg Harbor Township, N.J. Gilkes, who works in the Aerospace Ground Equipment shop, goes through several steps to make sure the light cart is ready to be used. (U.S. Air National Guard photo by Airman 1st Class Amber Powell/Released)