Normally, we leave Vegas via the C gates on SWA. This last trip our flight was scheduled out of B gates. We arrive at the gate and there is no TSA precheck. Well crap. We have pre on our tickets and I don't want to deal with all the shoes off, belt off, etc BS. I was skeptical, but the gate person told us we could turn around, take a long walk and end up getting to B, via C TSA checkpoint. It worked and we beat my brother, who had to do the normal TSA by about 2 minutes. A quote from the movie "The Quiet Man" it was a good stretch of the legs. Next time we'll know to just continue to the C gates for pre-check.