Conor Daly, driver of the No. 17 U.S. Air Force Recruiting Service Thom Burns Racing Honda, prepares to put on his helmet on pit road during "bump day" at Indianapolis Motor Speedway, May 19, 2018. The entry for Conor Daly was the first time the U.S. Air Force has sponsored a car in the Indy 500. Air Force photo by Airman 1st Class Greg Erwin