You're seeing America's new ground-to-air missile defense system in action, destroying an enemy QF-4 Phantom fighter jet. In fact, it simultaneously destroyed two airborne enemies during a stress test last Wednesday. Its name is MEADS and it will replace the famous Patriot missile interceptors.
An awkward thing happens late in the life of a fighter jet. It becomes too decrepit for combat but too functional for the junkyard. Don't worry, though. The Air Force has a plan: convert them all into drones in order to offer fighter pilots in training more realistic target practice.
For the second time this month, a drone (this one presumed to be a QF 4) has come spiraling out of the sky. The crash and subsequent explosion happened next to US 98 near Tyndall Air Force Base in—oh what a surprise—Florida.