U.S. Air Force Staff Sgt. Jimmel Winkfield, 489th Maintenance Squadron crew chief, works on the refueling system of a B-1B Lancer, March 22, 2016, at Dyess Air Force Base, Texas. Winkfield is an Air Reserve Technician who works with active duty members during the week, assisting them when extra help is needed to ensure the mission continues unhindered. He also performs the same duties one weekend a month for the same unit but as a military member for the Air Force Reserve Command. (U.S. Air Force photo by Senior Airman Shannon Hall/Released)