The following exert is an eye witness statement. Please read into it what you will. This has been reported to mufon who I am sure are investigating:
While driving west on beltway 8 near ellington afb at sunset, i noticed a green light hover in the sky, less than 1/2 mile away, for approximately 3 seconds, then it shot to the west horizon at an incredible rate of speed and disappeared at the west horizon. the object reached the horizon in less than two seconds. after a moment, i said “what was that?” my wife said, “you saw it too?”. we discussed this at length and have no rational explanation for what we witnessed. its not possible that a jet could have accelerated that quickly and reached the horizon that quickly.