An Air Force F-16 flies over a Dark Eagle Long Range Hypersonic Weapon vehicle launcher during a training exercise at Nevada's Nellis Air Force Base in 2024. 1st Lt. David Kim/US Army The US Army's hypersonic Dark Eagle missile can travel nearly 1,725 miles faster than the speed of sound. Dark Eagle's long-range capabilities could make it useful against targets deep inside Iran. The advanced missile was plagued by years of delays and setbacks during its testing. The US Army's new hypersonic...