PETERSON AIR FORCE BASE, Colo. – The High Frontier Honor Guard carries the flag-draped coffin of Capt. David I. Lyon Jan. 6 at the Peterson flight line. Lyon, a member of the 21st Logistics Readiness Squadron, was killed Dec. 27 while serving in Afghanistan. The High Frontier Honor Guard provided honors for Lyon upon his return to Colorado, at his memorial service, and at his interment at the U.S. Air Force Academy. (U.S. Air Force photo/Craig Denton)