Background

Designed to fulfill the US Air Force’s 1968 requirement for a lightweight air superiority fighter, the F-15 Eagle has arguably been the most successful and dominant air-to-air fighter since its entry into operational service in 1975. Even after over 40 years of exceptional performance and the emergence of the F-22 Raptor, the F-15 is expected to remain in service well into the 21^st Century.

History Brief

The Harley-Davidson WLA motorcycle was nicknamed the 'Liberator' because it was used by U.S. soldiers liberating occupied Europe. Harley-Davidson began producing the WLA for the U.S. military in 1940, later entry of the United States into World War II saw significantly increased production, with over 90,000 being produced during the war. The US Army motorcycles were used for police and escort work, courier duties and scouting. They were almost never used as combat vehicles or troop mobility, it was a single-rider design and rarely equipped with sidecars commonly found on the German motorcycles.

According to Wikipedia the model designation breaks down as follows:

Background

Designed to fulfill the US Air Force’s 1968 requirement for a lightweight air superiority fighter, the F-15 Eagle has arguably been the most successful and dominant air-to-air fighter since its entry into operational service in 1975. Even after over 40 years of exceptional performance and the emergence of the F-22 Raptor, the F-15 is expected to remain in service well into the 21^st Century. To keep F-15s current with latest technology to counter anticipated threats, Multi-Stage Improvement Programs (MSIP) have been undertaken between the USAF and the manufacturer to upgrade aircraft during planned depot maintenance intervals. MSIP II is focused on F-15C/D variants, and features upgrades including addition of AIM-120 AMRAAM capabilities, upgrade of its radar system, and select avionics and communications improvements.