March 20, 2018 Call for Airmen to participate in the 2018 Armed Forces Triathlon Championship JOINT BASE SAN ANTONIO-LACKLAND, Texas -- Air Force Sports is accepting applications for Airmen to compete for a position on the 2018 Armed Forces Triathlon team. The championship is scheduled from June 6 - 10, at Naval Base Ventura County, California. Applications are due no later than April 20