The well-marked door was unlocked, so through it I went, vaguely expecting some official form of recognition that I had passed through the looking glass into Airlineland -- at least a security counter, if not an X-ray screener. Nothing. Just a quick turn around a corner and I was alongside Cape Air's quaint check-in counter, with the TSA officer's desk in front of me. The door I had come through had a sign warning that only authorized personnel were permitted to use it to get back out to the ramp, but not really defining who was -- or wasn't -- "authorized." Not wanting to get stranded, I asked the uniformed TSA man if I'd be able to get back out to my airplane the same way I came in. His answer was a shrug. He mumbled, "yeah," along with a half-hearted head nod. Then he added, "You can check with the Airport Authority if you want," pointing to a glass door marked "Airport Authority." I decided I didn't want -- I'd leave well enough alone. If it was okay with the man packing the 9 mm, it was okay with me.