The tails of three U.S. Air Force KC-135 air refueling aircraft from the Ohio, Maine and Iowa Air National Guard on the ramp at the Glasgow Prestwick Airport in Prestwick, Scotland on May 18, 2021. The Air Guard refueling aircraft from Ohio’s 121st, Maine’s 101st and Iowa’s 185th Air Refueling Wings are in Scotland providing air refueling support as part of NATO exercise Formidable Shield. Formidable Shield is a multinational exercise, taking place in the region of the North Atlantic Ocean around the United Kingdom and Norway. U.S. Air National Guard photo by Senior Master Sgt. Vincent De Groot