When Jonny and I got to the airport on our way to Utah, we realized that we had a pocket knife on the set of keys in my purse. We figured this would be a good test of airport security. My bag was x-rayed, and the knife made it with us to Salt Lake and then back with us to San Francisco. The airport security was probably too busy looking for the tiny bombs inside a 4 ounce lotion bottle to notice.