he zeroed in on this event in stephenville, texas, in 2008.eporting seeing something in the sky, bright lights, weird movements. he interviewed them. he also, guys, requested faa radar data that would no longer be available today, and put the pieces together on, first of all, whether or not there was actually something in the sky, and then reports from people on the ground that say saw f-16 fighter jets. he looked at what was on the radar, did some calculations, and here's a glimpse into what he found. >> initially, the government said there were no f-16s in the air. however, i knew there were because i got the radar data from the faa, and i can track the f-16s. the acceleration, to go from standing still to 1900 miles an hour in 10 seconds or less, depending on how you calculate it, is anywhere from 10 to 20 g forces. the only way we can do that is by firing a missile. >> there is no aircraft, humanmade aircraft, that can accelerate at 10g? >> no. not with a human being in it. >> straight line acceleration, according to mr. powell, for a figh