Best to look, act and appear as 'normal' as possible. Don't wear shoes with metal eyelets or belts with metal belt buckles. As a matter of fact, leave any metal items at home. Be prepared to have your cell phone seized for no reason. Submit to the full body X-ray machine or be prepared to get felt up by people you don't know. Be prepared to arrive at your destination only to find items missing from your luggage. Good luck, you'll need it.