GLENDALE, Ariz. — Flags are Luke Air Force Base in Arizona are being flown at half-staff Monday in honor of an airman from Colorado Springs who died following physical training.

Officials say Master Sgt. Iordanis “Jordan” Velissariou was stricken Thursday at the base in the Phoenix suburb of Glendale.

The 40-year-old Velissariou was from Colorado Springs. He joined the Air Force in 1991.

At Luke, Velissariou was the fleet manager for vehicle maintenance in the 56th Logistics Readiness Squadron.

Luke is a training installation for fighter pilots.

Brig. Gen. J.D. Harris, left, former 56th Fighter Wing commander, presents a Purple Heart Medal June 29, 2012, to Master Sgt. Iordanis Velissariou. (Courtesy U.S. Air Force photo by Staff Sgt. Darlene Seltmann/azfamily.com) Photo by