The flashes are automax lights, part of the test equipment, they mark the exact location of three fuselage points at impact, because they mark the film very specifically.
Or they are the alien pilots, smiling for the camera....
Those landings are done at about 15 feet per second, based on some back of the envelope calculations I just did. The design sink speed of the Black hawk is 42 feet per second (including gear collapse) and it can hit at 12 feet per second without any damage. Therefore, these landings would probably result in no damage if done in an H-60!
This illustrates the power of the modern design requirements - the H-64 and H-58D are similar, I believe as is the S-92 and AB-139.
Last edited by NickLappos; 31st Mar 2007 at 15:52.