On 2 March 1949, a wing B-50A, the "Lucky Lady II", commanded by Capt. James Gallagher, completed the first nonstop, around-the-world flight. The flight departed from and ended at Carswell Air Force Base, Texas. Boeing KB-29s of the wing's 43rd Air Refueling Squadron refueled the Lucky Lady II four times on this mission. The mission received both the Mackay Trophy from the National Aeronautical Association and the Vandenberg Trophy from the Air Force Association for this mission. The wing conducted strategic-bombardment training from 1946 to 1960, and air refueling from 1949 to 1960, to meet Strategic Air Command's (SAC) global commitments. Replaced the propeller-driven B-29s and B-50s with new B-47E Stratojet swept-wing medium bombers in 1954, capable of flying at high subsonic speeds, primarily designed for penetrating the airspace of the Soviet Union. The 43rd set a new, jet endurance record in 1954 by keeping a B-47 airborne for 47:35 hours. Flew numerous training missions and participated in various SAC exercises and deployments with the Stratojet during the 1950s. In the late 1950s, the B-47 was considered to be reaching obsolescence, and was being phased out of SAC's strategic arsenal. The 43rd began reassigning its Stratojets to other wings as replacement aircraft beginning in 1959. Hustler operations at Carswell Air Force Base The 43rd Bombardment Wing moved to Carswell Air Force Base without personnel or equipment on 15 April 1960. At Carswell, it was manned and equipped from the 3958th Operational Test and Evaluation Group and the 6592nd Test Squadron of Air Research and Development Command, which were discontinued. The wing immediately began training crews on the Convair B-58 Hustler, the world's first supersonic bomber, and, it began participating in Category III testing (operational testing) of the Hustler in August. The 43rd was the first USAF B-58 wing. Aircraft number 59-2436, the first fully operational Hustler equipped with all tactical systems, was delivered to the 43rd on 15 March. On 23 March a test-unit B-58A (55-0671), remained airborne for 18 hours 10 minutes while averaging an airspeed of 620 mph over 11,000 miles. This was apparently the longest-lasting single flight ever by a B-58. The 43rd received deliveries of new aircraft from Convair throughout the year, the last being in December 1960. From March 1960 to July 1961, the 43rd operated a combat-crew training school for B-58 aircrews, and, from July 1962 until late 1969 it served as one of