Kim Crumbo.Photo: Facebook

The search continues for a former Navy SEAL whose half brother was found dead earlier this week after the pair failed to return home on time from a four-night trip to Yellowstone National Park.
On Monday, search and rescue teams located the body of Mark O’Neill, 67, on the east shore of Shoshone Lake, Yellowstone’s second-largest lake, according to areleasefrom the park. A cause of death for O’Neill was not released.
The previous day, after a family member notified the park that O’Neill and Kim Crumbo, 74, were missing, “park crews located a vacant campsite with gear on the south side of Shoshone Lake, as well as a canoe, paddle, PFD and other personal belongings on the east shore of the lake.”
In an update on Wednesday, park officials said that the search for Crumbo “will continue for the next several days.”
The incident remains under investigation.
Shoshone Lake.Jacob W. Frank/NPS

According to the park, the average temperature of Shoshone Lake is around 48 degrees Fahrenheit — and “survival time is estimated to be only 20 to 30 minutes in water.”
Additionally, the park’s website carries several warnings about boating on the east shore of the lake.
Noting that “winds and waves on Shoshone Lake can develop suddenly at any time,” the park suggests that all open water crossings be undertaken before 10 a.m. in the morning, which is when winds typically pick up.
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In addition to being a former Navy SEAL, Crumbo spent 20 years working for the National Park Service at the Grand Canyon, according to the website for theRewilding Institute, a conservation organization Crumbo worked with.
He was as a river ranger and wilderness coordinator for the National Park Service and served as a professional river guide for a decade. He is also a member of the Potawatomi Tribe.
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“We are hoping against hope that he defies the odds, again, and turns up alive, John Davis, the executive director of theRewilding Institute, toldThe Salt Lake Tribune.
“If there was anybody who was going to figure out a way to survive in the wild, it would be Crumbo,” added Katie Davis, executive director of Wildlands Network, where he previously worked as their Western conservation director.
source: people.com