seriously, as it should be. for someone to bring a firearm to the airport, unfortunately, it does happen. but for the actions of reaching for that gun, particularly in resulting with a discharge, and then disappearing, that elevates it to a new level, and this is going to take some time to sort through. it does indicate that tsa had located the gun. they knew that it was there and were in the process of confiscating it, so the tsa portion of the security system worked. but the actions from that point on, i think, will be studied and investigated in great depth but this is going to take a while to sort out. >> what does it take for an airport to go on lockdown, john, and how can airport officials, authorities, be so certain so