Nation Mar 14

American Airlines jet engine catches fire after landing in Denver
What to know about the aircraft that caught fire after landing in Denver

A fire on an American Airlines plane after it diverted mid-flight and landed Thursday at Denver International Airport sent passengers fleeing onto a wing in a fraught evacuation amid billowing clouds of smoke. Airport officials said 12 people were taken to hospitals…

The means and methodology of the Transportation Security Administration are under close review this week in the aftermath of an attempted attack on an airliner bound for Detroit. Among the techniques the TSA employs: something called "layered security." In…