Tech. Sgt. Brian Marshall, 823d Base Defense Squadron squad lead, right, and his son, Carter Marshall, work together to build a wall during a Habitat for Humanity volunteer event, Jan. 23, 2016, in Valdosta, Ga. Habitat for Humanity works with the help of many volunteers from the local community to build houses for qualified families. (U.S. Air Force photo by Airman 1st Class Lauren M. Johnson/Released)