The F-15A Eagle is an all-weather fighter designed to gain and maintain air supremacy. As the first US fighter with engine thrust greater than its basic weight, it can accelerate in a vertical climb. Its great power, light weight, and large wing area make it a very agile fighter. The USAF ordered more than 350 A models for operational service. The Eagle first flew on July 27, 1972, at Edwards AFB, California, and over its many years of USAF service it was produced in single-seat F-15A and C and two-seat F-15B and D versions. The two-seat F-15E Strike Eagle is a dual-role fighter that can engage both ground and air targets. Various models of F-15s are also used by Israel, Japan, Saudi Arabia, the Republic of Singapore, and South Korea. Manufactured in 1976 by McDonnell Douglas Aircraft at St. Louis, Missouri, this F-15A flew with Tactical Air Command units at Luke AFB, Arizona, and the Air National Guard at NAS New Orleans, Louisiana. Removed from the USAF inventory in 1991, it later served as a maintenance trainer at Langley Air Force Base, Virginia, before being delivered to the Museum in 2013. It is painted to represent an aircraft of the 1st Fighter Wing. Technical notes list its armament as one 20mm M61A1 Vulcan cannon, four AIM-7 Sparrow and four AIM-9 Sidewinder missiles, plus 15,000 lbs mixed ordnance carried externally; its engines as two Pratt and Whitney F100-PW-100 turbofans of 25,000 lbs thrust each; and its maximum speed as more than 1,600 mph, or Mach 2.5.