10/22/2012 - An "Avengers"-themed mural adorns the wall of the “Airman’s Attic” at Bagram Airfield, Afghanistan, Oct. 19, 2012. Staff Sgt. William Beal, assigned to 455th Expeditionary Logistics Readiness Squadron, volunteered his time and artistic talent to the Attic in order to add this special detail to the building. (U.S. Air Force Photo/Capt. Raymond Geoffroy)

10/22/2012 - Staff Sgt. William Beal, an Airman assigned to 455th Expeditionary Logistics Readiness Squadron, paints an "Avengers"-themed mural on the wall of the “Airman’s Attic” at Bagram Airfield, Afghanistan, Oct. 19, 2012. Beal volunteered his time and artistic talent to the Attic in order to add this special detail to the building. (U.S. Air Force Photo/Capt. Raymond Geoffroy)

10/22/2012 - Staff Sgt. William Beal, an Airman assigned to 455th Expeditionary Logistics Readiness Squadron, finishes a dedication on an “Avengers”-themed mural he painted at the “Airman’s Attic” at Bagram Airfield, Afghanistan, Oct. 23, 2012. Beal volunteered his time and artistic talent to add this special detail to the “attic.” (U.S. Air Force Photo/SSgt Jeff Nevison)

10/22/2012 - An “Avengers”-themed mural, painted by Staff Sgt. William Beal, adorns the wall of the “Airman’s Attic” at Bagram Airfield, Afghanistan, Oct. 23, 2012. Beal, assigned to 455th Expeditionary Logistics Readiness Squadron, volunteered his time and artistic talent to add this special detail to the “attic.” (U.S. Air Force Photo/SSgt Jeff Nevison)

10/22/2012 - Staff Sgt. William Beal, an Airman assigned to 455th Expeditionary Logistics Readiness Squadron, pauses for a photo after finishing an “Avengers”-themed mural at the “Airman’s Attic” at Bagram Airfield, Afghanistan, Oct. 19, 2012. Beal volunteered his time and artistic talent to add this special detail to the “attic.” (U.S. Air Force Photo/SSgt Jeff Nevison)