Volunteers for the Christmas in April project construct a wheelchair ramp at the Callahan residence in Upper Marlboro, Md., April 2. David Callahan, 19, was paralyzed in an automobile accident Jan. 23 on the Beltway. The accident also claimed the life of his 21 year old brother, David. The boys' mother works for the Judge Advocate General at the Washington Navy Yard on Joint Base Andrews. (U.S. Air Force Photo by Senior Airman Torey Griffith.)(Released)