With tighter security measures in place, it's important to prepare for air travel with good judgment and caution. Start out by examining everything you normally pack in your suitcase. Expect that your bag will be opened for inspection, so evaluate whether an object could be scrutinized by airport security. Airfares go up and down as quickly as the stock market, and it's not unusual for passengers to pay hundreds more than their seatmates for the same ticket. However, if you know what to look for, you can beat the system -- and we'll show you how! Find out how to secure the cheapest fares, get the best seats, and navigate the airport in record time.