U S AIR FORCE F-15 STRIKE EAGLE Challenge Coin. This is a great looking US AIR FORCE F-15 STRIKE EAGLE commemorative challenge coin. Coin has reeded edges and is about 1 9/16" in diameter. All details are raised lettering and gold plated. Coin is contained in an acrylic air tight holder. The McDonnell Douglas (now Boeing) F-15E Strike Eagle is an American all-weather multirole strike fighter, derived from the McDonnell Douglas F-15 Eagle. The F-15E was designed in the 1980s for long-range, high speed interdiction without relying on escort or electronic-warfare aircraft, United States Air Force (USAF) F-15E Strike Eagles can be distinguished from other U.S. Eagle variants by darker aircraft camouflage and conformal fuel tanks mounted along the engine intake ramps. The Strike Eagle has been deployed for military operations in Iraq, Afghanistan, and Libya, among others. During these operations the F-15E has carried out deep strikes against high-value targets, combat air patrols, and provide close air support for coalition troops. It has also been exported to several countries.