The 433d Weapons Squadron is a United States Air Force unit, assigned to the USAF Weapons School at Nellis AFB, Nevada. The unit was first activated in May 1943 and flew the P-38 Lightning in the Pacific Theater of Operations. The 433d distinguished themselves in air combat against Japan over New Guinea, Rabaul, and the Philippines, achieving over 200 aerial victories. Reactivated in 1964 for the war in Southeast Asia, the 433d was assigned to the 8th Fighter Wing at Ubon, Thailand, where it flew the F-4. The 433d again distinguished itself by becoming the number two leading MiG killing squadron in the vietnam war, scoring 12 kills over North Vietnam.