addressed. >> let's go to some of the particulars about thissu situatn now. earlier they referred to him as a mechanic, that's the job title that we were learning in the early moments after the breaking news. we now know that he was a ground service agent. first to you, mary, most people know what a mechanic is. ground service agent, what would that description consisted of and would he typically have access to the cockpit to pull something like this off? >> no, to have access to the cockpit and taxi an aircraft. normally you're a mechanic and you to have to specific authority and you have to have taxi authority and be trained in the airport and have taxi authority and know the airport traffic patterns because lots of collisions happen right on the ground in the taxiways. i have worked air crashes where planes have crashed into each other while they're being taxied around. a couple years ago a mechanic taxied one off accidentally off