Work commenced in October 2010, and an air traffic control tower, with accompanying Class D airspace, was commissioned on May 1, 2012.[15] At the dedication ceremony, two plaques were unveiled; one honored Frederick County residents who served their country in World War II, and the other honored Lieutenant William T. Delaplaine III, the first Frederick County pilot to lose his life in World War II.[15] The airport became the home of the Experimental Aircraft Association east coast fly-in in 1970.[16] On October 23, 2014, a Cirrus SR22 on descent struck a helicopter near the airport, killing all three aboard the aircraft involved.A National Transportation Safety Board report primarily blamed pilot error but noted the air traffic controller did not properly set priorities for handling multiple aircraft.