Our upcoming Continental flight is 5-1/2 hours. No meals, just "snack". (I assume the usual soda and cheapo trail mix) The flight is at 7:30 a.m and with heighten security I need to be at the airport by 5:30 a.m.! I'm sure I'll find something at the airport to call breakfast, but can I bring food on the airplane? And if I can, what kinds of things are acceptable and usual for flights of this duration?