While standing outside on my patio lanai having a cigarette i saw a large bright white object shoot across the sky at a very high rate of speed. way too fast for an airplane or helicopter. also way too low to be a shooting star or comet of some sort. also way too big to be a drone of any sort. it was approximately the size ebay commercial jet aircraft but not to be like in shape, more of a blimp. as i stated before it was way too fast to be anything i've ever seen before. this is the third time i have seen something in 9 years, yet the first time i've seen anything like this. it only lasted about 3 seconds because of the speed comma and also looked like it was ascending from a higher altitude as if it were going to crash but no crash was seen. the sky was relatively clear and it is pitch black where i live so i crash would have been seen. not sure what else i can tell you. hope this helps.