David McCarty, 59, was flying his relatives in his private helicopter through remote Telegraph Canyon near Superior, Ariz., ...

Preliminary evidence indicated a slackline of more than 1 kilometer in length was strung recreationally across a canyon.

Preliminary evidence indicated a slackline of more than 1 kilometer in length was strung recreationally across a canyon.

Investigators say a helicopter hit a highline stretched across Telegraph Canyon near Superior, killing four. Here’s what to ...

The U.S. government admitted Wednesday that the actions of an air traffic controller and Army helicopter pilot played a role in causing the collision last January between an airliner and a Black Hawk ...