hheheh i too at the airport play "whos the spy", you have to in my line of work, trying to get the stuff past those dogs..errr never mind ;P
kinda like at defcon when everyone plays "lets spot the federal agent"
"I spy with my lil eye, the NSA agent wih the funny antenna pokin outta his ear!!!"
I wonder how many spy sats converge on the parking lot at las vegas during that convetion? Remind me to take a few sheets of the aluminum foil around my head and cover my license plate the next time im there.