Radar Nets and High-Powered Jamming: The 1948 Dewey–Forrestal Concept and Its UFO Context

To the point

A 1948 letter from industrialist Bradley Dewey to James Forrestal proposes a civil-defense plan that combines a cooperative Canadian–American radar net to detect incoming planes with very powerful radar-jamming stations to disrupt enemy control mid-flight, links this concept to UFO incidents such as Roswell and Aztec, and implies that top U.S. defense officials already understood radar could interfere with saucer systems even before the Hottel Memo.