One of the features about UFO sightings that has consistently baffled the experts is their apparent ability to swoop downward, hover and then soar into the sky at impossible speeds.
Viewed head on, this is exactly how an A-12 or an SR-71–its J58-powered successor–appears to move at times during a normal flight. The maneuver is called a "dipsy doodle."
The article makes really good points about how UFO sightings correspond with Military experimental craft development through the years. I believe this to be true, but I also believe that we have been visited by aliens. . .
