All three on board were found dead after the plane went down Friday after taking off from West Yellowstone Airport, authorities said.

The dense timberlands in a small town near West Yellowstone, Montana, concealed the wreckage of a small plane until an unlikely beacon — a victim’s smartwatch — helped search-and-rescue crews locate the crash site,

A smartwatch helped lead searchers to a plane crash that killed all three people aboard, Montana sheriff's officials reported. Dispatchers received a report of a missing airplane from the U.S. Department of Transportation Aero Division at 1:41 p.m. Friday, July 18, the Gallatin County Sheriff's Office said in a July 21 news release.