I went in the back yard of my house in olathe, ks around 9:40 p.M., saturday night, august 12th, in hope of seeing a meteor during the perseid meteor shower. after staring in the ne sky for a short while, i saw a brief bright white flash about the size of a planet. afterward, i could faintly see two star-like objects. after a few seconds they disappeared. however, approximately 30 seconds later there was another brief bright flash in the same location. once again i could faintly discern two star-like objects. suddenly, one of the objects accelerated to an incredible speed and disappeared from view to the sw behind a tree in my yard. approximately 45 seconds later, the second object began moving slowly to the north. it slowly made a counter-clockwise u-turn then also accelerated an incredible rate of speed to the sw and also disappeared in less than a second. i can't estimate the height of the objects but they were high--at least 10,000 feet or more. their speed was incredible--10 times faster than any meteor/meteoroid or conventional aircraft i've ever seen in my life. while it's just a guess, based on their estimated height and distance, they had to have gone from zero to around 5,000 mph in a millisecond. they went so fast they became a streak across the sky. i couldn't believe what my eyes were seeing. my first reaction was awe, the second wonderment as to who/what could be piloting these craft, and the third was fear. i hoped they weren't aware of me but some reason felt they were. i was shaken by the experience. i have been a mufon field investigator (#19371) since 2011.