For those of you that require specific foods or liquids for your medical conditions, please be advised that not all airports have food vendors available AND open beyond the security check point. You should always carry your medical food stuff with you and do not rely on the airlines either. For example, at SFO Terminal One (servicing Alaska, Southwest, US Air, AirTran, Sun Country and Continental) food vendors close at around 10pm on certain nights and many flights leave after that time.