Fighter Jet Activity Over Arkansas

I just witnessed an F-35 make an impressive u-turn, and accelerate so fast it broke the sound barrier. It was only at about 5,000 to 6,000 feet, and the sonic boom was deafening. As they are NOT allowed to do that over residential areas except in emergencies, it has me very curious. It turned due North when it accelerated so fast, traveling through the center of Izard County. Anyone North of me know of anything happening?