India, Jan. 5 -- An Oregon businessman and his three nieces were killed in a New Year tragedy after a sightseeing helicopter piloted by him slammed into a slackline just hours before he was set to tie the knot. The businessman, 59-year-old David McCarty, was flying his relatives in his private MD 369FF helicopter through remote Telegraph Canyon near Superior, Arizona, just east of Phoenix around 11 am on Friday, January 2, when the chopper struck a recreational highline strung across the mountains, according to authorities.

"He just wanted to show his family around," a relative told Fox 10 Phoenix.

The helicopter was sent plunging to the canyon floor, killing everyone on board.

McCarty died alongside his nieces Rachel McCarty, 23, Fait...