Perhaps I am discovering conspiracies almost everywhere I look, however the thing that grabbed my attention about this news report is a specific quote coming from his father-in-law:

The tragedy crushed Decareaux's father-in-law, who described the family as tightly knit, "always on the go and adventurous." Decareaux was a doting father and spiritual man who had retired from the Air Force in recent years and was working with the Defense Department in a job he couldn't discuss, even privately, Keith Hartrum said.

This was an experienced hiker who went out with two kids aged 8 and 10 and died overnight, even before the kids did.
More here:

Little weird if you ask me!