perimeter security. what specifically would you like to see done? >> well, first i'd like to know our vulnerabilities. we haven't taken a diagnostic of our nation's airports. these airports, don, they are bigger than some -- than many small towns, over 1,000 acres in many cases and it's impossible to guard against 100% of the threats. i think we owe it to passengers to look at what new technologies are out there that we could employ to make sure that when we get on a plane only ticketed, screened passengers are on that flight. >> if a person is able, congressman, to climb in the wheel well of a plane, you have to think there's nothing to prevent someone from putting something else, some contraband or god forbid even a bomb on the plane. >> that's what is so troubling. we are fortunate the past incidents, passenger safety was not affected. but you can only imagine what a determined person could do. that's why i think let's take a look at all of our airports,