I just got in from driving Dallas-Oklahoma City. About 10 miles from the boarder of Texas and Oklahoma, two "fighter jet" looking planes came directly across I-35, in formation, extremely low. I really couldn't believe how low they were. They came from the east and went directly west. Then, they made a sharp turn to the north, and came back from the west, going east, and buzzed the interstate again at an extremely low altitude. They disappeared off to the east. I couldn't make out what type of plane they were, but they seemed to have a single jet engine, with a small wing-type object on the front, and a larger wing behind. It almost looked like a large missile, but it seemed a lot smaller than a fighter aircraft. Anyone know what was going on?