Washington Airport buildings to allow full vision over 750 acre landing field. Washington, D.C., Dec. 2. The model here being inspected by Col. Sumpter Smith, Chairman of the Washington National Airport Commission, shows a portion of the field as it will look upon completion. It shows the buildings which are so situated that observers in the control tower will be enabled to see the entire 750 acres of the airport. The building houses a dining room, a concourse, coffee shop offices, and some repair and maintainance shops