Navy laser decoys
Link from David Brin's blog (http://davidbrin.blogspot.com/2021/05/more-marvels-from-space-starting-with.html):
The U.S. Navy has patented technology to create mid-air images to fool infrared and other sensors. This builds on many years of laser-plasma research and offers a game-changing method of protecting aircraft from heat-seeking missiles. It may also provide a clue about the source of some recent UFO sightings by military aircraft.
https://www.forbes.com/sites/davidhambling/2020/05/11/us-navy-laser-creates-plasma-ufos/
