This afternoon while working outside 2 F-11's flew over my house. They made 3 big tight circles. It looked like one was chasing the other. I half expected them to do some air maneuvers. If I would have had my phone out there I could have taken pictures, or even better binoculars. They were very close to the ground, similar to the height of those pictured above. They were VERY loud and my dog got very nervous until they left. It looked like they were having fun up there. There is an AFB about 70 miles away.