A battlefield cross is on display May 5 at Hill Air Force Base, Utah, during a mud run hosted by the 775th Explosive Ordnance Disposal Flight. The mud run was part of National Explosive Ordnance Disposal Day. The purpose of EOD Day is to remember those who have given the ultimate sacrifice operating as EOD technicians across the Department of Defense. (U.S. Air Force/R. Nial Bradshaw)