First Lt. Adria Trgovich, 350th Air Refueling Squadron navigator, briefs aircrews from the U.S. and Turkish air forces before their flights, March 8, 2016, at Nellis Air Force Base, Nev. The crews flew the first-ever joint KC-135 Stratotanker formation flights during Red Flag 16-2. (U.S. Air Force photo/Senior Airman David Bernal Del Agua)