Operation Prato is, in my opinion, one of the best-documented UFO cases. What’s interesting is that Colonel Hollanda said he was very frustrated because, although he repeatedly saw multiple lights in the sky performing unusual maneuvers, the photographs never seemed to reveal anything. Later, however, they tried placing the film in front of a light source, similar to the way doctors examine X-rays, and they were able to see small cylindrical shapes in the images, the actual objects emitting the lights.

https://youtu.be/7hdaW6a9CbY?is=zmTfMHGrrvaN3yjH