Just the airport, twice, both for layovers. The second time it didn't remind me as much of a skeevy old bus depot as the first time. I was also sort of distracted the second time because it turned out I knew one of the air marshals who was getting on my return flight to Boston. Hadn't seen the guy in years and I wasn't sure if he would be able to acknowledge that he knew me, but he did and we ended up shooting the s hit for awhile. Needless to say, I have never felt safer on a plane than I did on that particular flight.