Guard 114th Fighter Wing - Joe Foss Field 175th Fighter Squadron Texas Air National Guard 149th Fighter Wing - Kelly Field Annex 182d Fighter Squadron Wisconsin Air National Guard 115th Fighter Wing - Truax Field 176th Fighter Squadron Pacific Air Forces Pacific Air Forces (PACAF) was an early recipient of the F-16 and PACAF operates the latest models of the F-16 today. 8th Fighter Wing - Kunsan AB, South Korea 35th Fighter Squadron 80th Fighter Squadron 35th Fighter Wing - Misawa AB, Japan 13th Fighter Squadron 14th Fighter Squadron 51st Fighter Wing - Osan AB, South Korea 36th Fighter Squadron 354th Fighter Wing - Eielson AFB, Alaska 18th Aggressor Squadron US Air Forces in Europe Once PACAF began receiving its F-16, US Air Forces in Europe (USAFE) became a recipient of the F-16. USAFE F-16s have been common participants in most recent US military operations in Europe and the Middle East. 31st Fighter Wing - Aviano AB, Italy 510th Fighter Squadron 555th Fighter Squadron 52d Fighter Wing - Spangdahlem AB, Germany 480th Fighter Squadron United States Navy While the United States Navy chose the competing McDonnell Douglas F/A-18 Hornet for development as a carrier-based strike fighter, the service still had a need for an aggressor aircraft to supplement the Douglas A-4 Skyhawk and Northrop F-5E Tiger II aircraft posing as enemy fighters to help train Navy pilots in dissimilar air combat training (DACT). The lightweight F-16 was ideal for the job, and the F-16N version was specifically developed for the task. With removal of the internal cannon (compensated by ballast), the F-16N and two-seat TF-16N served for a number of years before retirement. The F-16 was reintroduced to the aggressor role for the US Navy with the acquisition of some of the Pakistani F-16A/B-15OCU aircraft embargoed before delivery to that country and they remain in use today at the Naval Strike and Air Warfare Center (NSAWC) at NAS Fallon, Nevada. The US Navy operates 40 F-16s. National Aeronautics and Space Administration Though not a military force, NASA plays a vital role in research and development of aerospace technology. Its fleet contains two exotic F-16 models (bailed from USAF), the F-16XL and F-16A AFTI, both involved in researching advanced technologies for application to not only the F-16, but other aircraft as well. Additionally, a number of standard F-16s have been operated by NASA as chase aircraft and engine testbeds. Original NATO