6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - More than 1,000 Airmen from Minot Air Force Base, N.D., helped to fill more than 250 tons of sandbags June 22, 2011, in preparation for potentially the worst flood in history for the city of Minot. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011 ,for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)

6/23/2011 - Air Force Global Strike Command Airmen, Minot city officials, the National Guard and the Corps of Engineers prepare June 21, 2011, for potentially the worst flood in this city’s history. (U.S. Air Force photo/Staff Sgt. John D. Comer)