Stationary white star-like light took off at high speed and disappeared when we looked, strange flash above, ground shaking.Camping up on a butte in the desert east of the Ricon Mts. NE of Tucson, ~4,500 feet, GPS coordinates 32.10 by 110.29. First, a helocopter buzzed the area without any lights. It shined it's searchlight onto the desert about a mile away from us for a second or two. Then my friend called my attention to a flashing white light over Driscoll Mt., GPS coordinates 32.11 by 110.27. When I looked to see it, it wasn't flashing, it was a steady white light, looked like a bright star. Then a second later, it took off to the right (south) at about 300 MPH (with no sound or acceleration time), and then disappeared behind the bottom of a cloud. If it would have continued on it's course, it would have popped out from teh other side of the cloud in a couple of seconds. Then the storm that was approaching us started to lightning. I looked up at the sky telling my friend that we're on a butte in the desert, so it's best to call it a night and hide in the tents. Just then when I was looking straight up, a huge flash went off right above me. There were no clouds above me. It looked like a big camera flash going off. No lightning bolt nor any thunder. I got scared and hid in the back of my truck where I sleep with a loaded .44 Magnum next to me. My friend reported the mountain seemed to shake like an earthquake - no such thing in Arizona. That's all.((NUFORC Note: One of three reports from same source for locations in Arizona and Colorado. PD))