Sonic Boom

Shuttle Endeavor landed in Florida tonight. We watched NASA TV on cable to see the approach to Florida from the Gulf. Then we went outside to look for it. We saw the previous shuttle come in for a landing from our backyard. Whether or not we can see it from Tampa all depends on what approach it takes as it comes down. The sky was clear and we saw some airplanes, but not the shuttle. As it approached Florida's west coast just south of here we heard the sonic boom. There were 2 booms, like a double click. It was a low-pitched, soft boom-boom. I was outside and felt it in my chest.