Joint Base Andrews Airmen applaud during a homecoming celebration for the Snowball Express at Ronald Reagan Washington National Airport, Washington, D.C., Dec. 4, 2012. The Snowball Express is Honors America’s fallen military service members who have made the ultimate sacrifice since Sept. 11, 2001 by humbly serving the families they left behind. (U.S. Air Force photo/ Airman 1st Class Erin O'Shea)

Joint Base Andrews Airmen stand with U.S. pageant winners, Maura Deegan, Miss District of Columbia Teen; Elyse Millan, Miss Delaware Collegiate Teen; and Mary David, Miss Wyoming, during the Snowball Express homecoming at Ronald Reagan Washington National Airport, Washington, D.C., Dec. 4, 2012. The mission of Snowball Express is to Honor America’s fallen military service members who have made the ultimate sacrifice since Sept. 11, 2001 by humbly serving the families they left behind. (U.S. Air Force photo/ Airman 1st Class Erin O’Shea)

Joint Base Andrews Airmen help families carry their luggage after returning from a trip to Colorado at Ronald Reagan Washington National Airport, Washington, D.C., Dec. 4, 2012. The mission of Snowball Express is to Honor America’s fallen military service members who have made the ultimate sacrifice since Sept. 11, 2001 by humbly serving the families they left behind. (U.S. Air Force photo/ Airman 1st Class Erin O'Shea)