S1, E22: An American Air Force fighter plane gets shot down over Iraq, and, eventually, the pilot is successfully rescued. The space shuttle--with Toby's astronaut brother on board--can't land because of mechanical problems. During a town hall meeting on a university campus, the President impresses college students and others in the crowd with his answers combining fact with humor. While Zoey, Charlie, the President and members of his staff exit the building, gunfire erupts. Who is injured?