World wonder
Capt. Vincent Alipio, assigned to the 349th Medical Squadron, Travis Air Force Base, Calif., takes a break during exercise Patriot Warrior to check out the total solar eclipse at Young Air Assault Strip, Fort McCoy, Wis., Aug. 21, 2017. This was the first total solar eclipse in 38 years. (U.S. Air Force photo/Tech. Sgt. Efren Lopez)