In 1930, Blériot himself instituted the "Blériot Trophy", a one-time award which would be awarded to the first aircrew to sustain an average speed of over 2,000 kilometers per hour (1,242.742 miles per hour) over one half of an hour, an extremely ambitious and prophetic target in an era when the fastest aircraft were just breaking the 200 mph mark. The award was finally presented slightly more than three decades later by Alice Védères Blériot, widow of Louis Blériot, at Paris, France, 27 May 1961, to the crew of the United States Air Force Convair B-58A jet bomber, AF serial number 59-2451, "Firefly", crewed by Aircraft Commander Major Elmer E. Murphy, Navigator Major Eugene Moses, and Defensive Systems Officer First Lieutenant David F. Dickerson who on 10 May 1961, sustained an average speed of 2,095 kmph (1,302.07 mph) over 30 minutes and 43 seconds, covering a ground track of 1,077.3 kilometers (669.4 miles). This same crew and aircraft went on to set a number of other speed records before being lost in an accident shortly after takeoff from Paris, not long after setting yet another speed record, winning the Harmon Trophy for a record-setting flight between New York City and Paris, France. This flight was 3,626.46 miles in 3 hours, 19 minutes, 58 seconds, for an average of 1,089.36 mph. The Blériot Trophy winning crew took over the aircraft for the return flight, but were all killed when the pilot lost control shortly after takeoff from the Paris Air Show when he lost control during some attempted impromptu aerobatics.