Conor Daly, driver of the #17 U.S. Air Force Recruiting Service Thom Burns Racing Honda, prepares to put on his helmet on pit road during "bump day" May 19, 2018, at Indianapolis Motor Speedway, Indianapolis. The entry for Conor Daly was the first time the U.S. Air Force has sponsored a car in the Indy 500. (U.S. Air Force photo by Airman 1st Class Greg Erwin)