U.S. fighter jets are having worrisome aerial encounters in Arizona’s restricted air combat training areas, which fits with a broader trend. Encounters with small unidentified "objects," sometimes in swarm-like groups of as many as eight. Sightings of other objects, including some characterized as drones, flying at altitudes up to 36,000 feet and as fast as Mach 0.75. Another apparent small drone actually hitting the canopy of an F-16 Viper causing damage. These incidents and many more, all occurred in or around various military air combat training ranges in Arizona since January 2020. The events are described in reports from the...