400th Fighter Squadron

58th Reconnaissance Squadron
WB-57F of the 58th Weather Reconnaissance Squadron
Active	1943–1946; 1951-1958; 1964-1972
Country	United States
Branch	United States Air Force
Role	Reconnaissance
Part of	Air Weather Service
Insignia
58th Weather Reconnaissance Squadron emblem (approved 26 July 1965)
58th Strategic Reconnaissance Squadron emblem (approved 18 January 1952)
400th Fighter Squadron emblem (approved 12 January 1944)

The 58th Reconnaissance Squadron is an inactive United States Air Force squadron. Its last was assigned to the 9th Weather Reconnaissance Wing at Kirtland Air Force Base, New Mexico, where it was inactivated in 1974.

Activated as the 400th Fighter Squadron in early 1943 under Fourth Air Force; spent World War II in the United States as an Operational Training Unit (OTU), initially equipped with P-39 Airacobras for advanced fighter training. Reassigned to Third Air Force in 1944, becoming a Replacement Training Unit (RTU) for A-36 Apache fighter-dive bomber ground attack aircraft.

Reassigned to Stuttgart AAB, Arkansas in 1945 and redesignated as the 58th Reconnaissance Squadron (Weather), a long-range strategic weather reconnaissance squadron, training with B-25 Mitchells and long-ranger P-61C Black Widow Night Fighters modified for weather reconnaissance missions. Reassigned to Rapid City AAB, South Dakota in late 1945, using P-61Cs as part of a NACA/Air Weather Service Thunderstorm Project to learn more about thunderstorms and to use this knowledge to better protect civil and military airplanes that operated in their vicinity. The P-61's radar and particular flight characteristics enabled it to find and penetrate the most turbulent regions of a storm, and return crew and instruments intact for detailed study. Inactivated in 1946 as part of the general demobilization of the AAF.

Reactivated as part of Strategic Air Command in 1951 in Alaska, Equipped with very long range WB-29 Superfortresses 1951, upgrading to extended long-range WB-50D Superfortresses in 1956. Conducted long-range weather flights over the Arctic and along the northern periphery of the Soviet Union; the aircraft being equipped with sensors for detecting radioactive debris to gather evidence when the Soviets tested nuclear devices. Inactivated in 1958 as part of the phaseout of the WB-50s from SAC and development of faster jet aircraft for the long-range intelligence mission.