Thousands of volunteers have scoured nearly six square miles of the High Uintas, about 80 miles east of Salt Lake City, for Brennan Hawkins of Bountiful, who was last seen Friday night at a Boy Scout camp.
"He's probably dehydrated, sleep-deprived, definitely hungry," said Brennan's father, Toby. "With him being so young at 11, I don't think he's thinking about what he needs to do to survive because he's never been in that environment."
"We look out into this darkness now and somewhere my son is out there," Hawkins said Monday on NBC's "Today" show. "If you can find time to come up here and help us, please do. That's what we need now. We need people to come up and help."
Brennan was last seen near a climbing wall at the 8,500-foot elevation Scouting site, not far from the swollen East Fork of the Bear River.
About 3,000 volunteers searched for the boy on Sunday, when some churches in Brennan's hometown of bountiful, north of Salt Lake City, canceled services so their members could help.
Jody Hawkins has sat in the campground the last two days, staring at hills wondering if that's where her son is lost. She said some of the volunteers were discouraged because they didn't find Brennan Sunday, but she assured them their help is valuable.
"I know where's he's not now, I know he's not in those hills," Jody Hawkins said. "We got that much closer because of those people."
Summit County Sheriff Dave Edmunds said searches of the rugged wilderness had turned up no evidence so far, but investigators remain hopeful that the boy is simply lost. Nonetheless, investigators were exploring the possibility of foul play, especially since there were quite a few people in the mountains.
"Any time a child goes missing, we obviously treat it as a missing person right out of the chute," Edmunds said on CBS News' The Early Show. "But I've also got my detectives running a parallel possible kidnapping investigation, and they're gathering information about all the people that were up here and there has been quite a number of people up here over this weekend."
"There's individuals that came to the scout camp for training. There's people that have been camping in the general vicinity. And I got my detectives out there right now trying to ascertain just exactly who was up here in the woods and make sure we didn't have a predator or something of that nature," Edmunds told Early Show co-anchor Julie Chen.