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)