The 1954 interceptor, formally WS-201A, was a US Air Force project to develop a dedicated interceptor aircraft that would enter service in 1954. Several aircraft were developed as part of the project, leading to the F-102 Delta Dagger, F-106 Delta Dart, XF-103 Thunderwarrior and, indirectly, the F-104 Starfighter. The electronics and weapons were also destined to become common, including the AIM-4 Falcon missile and a variety of Hughes Electronics supplied radar and fire control systems.