Editing Project Mogul (section)

==Subsequent programs==
{{Main|Nuclear detonation detection system|United States aerial reconnaissance of the Soviet Union}}
Project Mogul was the forerunner of the [[Skyhook balloon]] program, which started in the late 1940s, as well as two other [[espionage]] programs involving balloon overflights and photographic surveillance of the Soviet Union during the 1950s, [[Project Moby Dick]] and [[Project Genetrix]].  The spy balloon overflights raised storms of protest from the Soviets.<ref>[http://stratocat.com.ar/stratopedia/28.htm][https://books.google.com/books?id=uOcrDF0y-CAC&dq=project+genetrix+soviet+protests&pg=PA78 Project Genetrix and Soviet protests]</ref> The constant-altitude balloons also were used for scientific purposes such as [[cosmic ray]] experiments. 

Further development of [[nuclear detonation detection system]]s was extensive for decades afterward, culminating in worldwide systems by various countries to keep eyes and ears on detecting and verifying the others' nuclear weapon developments. 

There would also be fixed-wing [[United States aerial reconnaissance of the Soviet Union]] during the 1950s. Overflights would end in 1960 [[1960 U-2 incident|once an aircraft had been shot down by SAMs]]. Reconnaissance would for decades afterward be handled mostly by [[reconnaissance satellite]]s and to some extent by aircraft, such as the A-12 OXCART and SR-71 Blackbird (photography and radar) and RC-135U and similar aircraft (SIGINT including ELINT and COMINT).