OSI special agents from Detachment 421, Luke AFB, Ariz.,celebrated St. Patrick's Day by getting involved in an especially challenging fitness event March 17. A team from OSI participated in a Gladiator Rock-n-Run Mini Mudder event to support Talk About Curing Autism. The event combined a 5K off-road race across mountainous and desert terrain with a series of 17 extreme obstacles. Every OSI team member crossed the finish line, generally much less clean than they began it. (U.S. Air Force photo provided by Det. 421.)