4. A group of local pilots are discussing airport security. One of them expresses the opinion that airline security at the local airport is as big as a joke as it was before 9/11. "It's those same morons who couldn't get a job flipping burgers, doing the same job they did before, only in different uniforms," he says. "Plus, the whole program assumes that a terrorist is just going to get in line and go through security screening like everybody else. It would be a piece of cake for a terrorist to put on a pair of blue coveralls like the ramp workers wear, slide in through that bent-up old gate down by the old hangar and walk right on to an airline without anybody challenging him. Fred, why don't you get your video camera and let's go over there and do that and get it on videotape. We'll give the tape to the TV station, and when they show that on the news, somebody will have to get serious about security at the airport."

a) Arnold, one of the group engaged in the original conversation fails to show up at the gate, but the others don their blue coveralls and start squeezing one-by-one through bent gate. The police arrive and arrest them. What crimes, if any, can Arnold be charged with? What additional crimes can the others now changed with?

b) instead, the group is not intercepted and completes the mission as planned, without interference. What additional crimes can be charged?