The Teen Series is a popular name for a group of US combat aircraft. The name stems from a series of US supersonic jet fighters built for the United States Air Force and the United States Navy during the late 20th century. The designations system was the 1962 United States Tri-Service aircraft designation system, which reset the F-# sequence. The term typically includes the F-14 Tomcat, F-15 Eagle, F-16 Fighting Falcon, and F/A-18 Hornet.