2 p.m. Saturday, May 20, July 15 and October 21 visit one of the Cold War’s few surviving Army Air-Defense Posts. Local historian Albert Burckard hosts a short presentation and a walking tour of this site which contains the original barracks, mess hall, administration and recreation building, officer/non-commissioned officer family housing, fueling area and underground missile magazines. The one-hour tour begins and ends at Nike Park in the Senior Center, 13036 Nike Park Road, Carrollton, Virginia 23314. Reservations are not required. Please wear comfortable walking shoes.