the 522d, 523d and 524th Fighter Squadrons. The 27th was initially equipped with the North American P-51D Mustang, and in 1948 was upgraded to the new North American F-82E Twin Mustang. In June 1948 the designation "P" for pursuit was changed to "F" for fighter. Subsequently, all P-51s were redesignated F-51s. The mission of the 27th Fighter Wing was to fly long-range escort missions for SAC Boeing B-29 Superfortress bombers. With the arrival of the F-82s, the older F-51s were sent to Air National Guard units. The first production F-82Es reached the 27th in early 1948, and almost immediately the group was deployed to McChord Air Force Base, Washington, in June where its squadrons stood on alert on a secondary air defense mission due to heightened tensions over the Berlin Airlift. It was also believed that the 27th would launch an escort mission, presumably to the Soviet Union, if conflict broke out in Europe. From McChord, the group flew its Twin Mustangs on weather reconnaissance missions over the northwest Pacific, but problems were encountered with their fuel tanks. Decommissioned F-61 Black Widow external tanks were found at Hamilton AFB, California that could be modified for the F-82 which were fitted on the pylons of the Twin Mustang that solved the problem. With a reduction in tensions, the 27th returned to its home base in Nebraska during September where the unit settled down to transition flying with their aircraft. Four F-82s were deployed to Alaska from McChord where the pilots provided transition training to the 449th Fighter (All Weather) Squadron which used Twin Mustangs in the air defense mission. They remained in Alaska for about 45 days, returning to rejoin the rest of the group at the beginning of November 1948. In January 1949, Eighth Air Force planned a large celebration at Carswell Air Force Base. All of its assigned units were to participate in a coordinated flyover. Most of SAC's bombers were to participate, along with SAC's only "long range" fighter group, the 27th. The weather in Nebraska in January that year was especially horrible, with most airports in the Midwest weathered in the day of the display. At Kearney, the base was socked-in with a blizzard. Nevertheless, the crews had an early morning mission briefing, the aircraft in the hangars were preflighted and prepared for the flyover mission. Paths were cut though the snow for the aircraft to taxi