In 1956, the USAF decided that the proposed WS-125 bomber was unfeasible as an operational strategic aircraft. Finally, after spending more than $1 billion, the project was cancelled on March 28, 1961.[citation needed]
Two General Electric J87 turbojet engines were successfully powered to nearly full thrust using two shielded reactors. Two experimental engines complete with reactor systems (HTRE-3 and HTRE-1, which was modified and renamed HTRE-2) are located at the EBR-1 facility south of the Idaho National Laboratory.
