Air Force participates in "Monster" weekend
Lt. Col. Charles Kelm, 436th Civil Engineer Squadron commander, shakes hands with Tony Stewart, driver of the No. 14 Mobil One Chevy after the pre-race driver’s meeting before the start of the Fed Ex 400 Benefiting Autism Speaks at Dover International Speedway in Dover, Del. Kelm, who served as honorary pit crew member, said the experience was one he would never forget. (U.S. Air Force photo/David Tucker)