Retired Col. Thomas Arko, a guest speaker during the 100th anniversary celebration, spoke on the 34th and 37th Bomb Squadrons in the Pride Hangar at Ellsworth Air Force Base, S.D., June 12, 2017. Both the 34th and 37th BS have played significant roles in the nation’s defense dating back to the Army Air Corps and their involvement with World War I. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)
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