As a result, in May 1971, the Air Force Prototype Study Group was established, with Boyd a key member, and two of its six proposals would be funded, one being the Lightweight Fighter (LWF).
Som et resultat blev "Air Force Prototype Study Group" ("Luftvåbnets prototype studiegruppe") stiftet i Maj 1971, med Boyd som et af de vigtige medlemmer, og to af gruppens seks forslag fik finansiering, det ene var "Lightweight Fighter program" ("Letvægts Jager Programmet").