Vectren Dayton Airshow spectators, brothers Parker,

Vectren Dayton Airshow spectators, brothers Parker, 14, (left), and Cole (12) right, learn about the control operations of a KC-135R Stratotanker flight deck from Senior Airman Michael Mcnally, 434th Aircraft Maintenance Squadron crew chief, as their mother, Carol Erisman, waches, June 24, 2017. For many spectators, including Parker and Cole, this experience was their first time to see inside of a military aircraft, yet alone experience aerial refueling from a boom operator or pilot's perspective. (U.S. Air Force photo/Staff Sgt. Katrina Heikkinen)