Code orange is not so bad, but code red could be a nightmare:
http://www.usatoday.com/travel/news/...5-code-red.htm

Code red would severely restrict the ability to travel relatively efficiently:

"...a ban on parking within 300 feet of an airport terminal, search of every vehicle proceeding to a terminal and the elimination of cargo on all passenger flights. Passengers may be required to check in at least three hours before a flight and shouldn't be allowed to carry laptop computers..."