DARPA Tweet about metamaterials research @ Sandia National Laboratories. Possible implementation Adaptive Camouflage. Think Predator

https://twitter.com/DARPA/status/1111613745892073473

https://phys.org/news/2019-03-mirage-software-automates-optical-metamaterials.html

>>5960626

Even more in the full exif data

>>5960821

Not notable, exif data is easily manipulated. see example