The helicopter crashed after it struck a recreational slackline suspended in Telegraph Canyon on Jan. 2, killing all four ...

How was a thin strip of nylon or polyester webbing stretched between two points to blame in the January crash that killed four near Superior?

How a highline became an aerial hazard The slackline involved in the crash was not a casual backyard setup but a highline, a specialized form of slacklining in which athletes rig a narrow webbing ...