Well, it's hard to say without being on the ground. A full-scale search cannot go on indefinitely.

http://www.theglobeandmail.com/news/brit...rticle14598428/
http://www.vancouversun.com/news/Rescue+...7596/story.html

There was an intensive search for a full week that "included multiple search and rescue crews, a helicopter, the RCMP, the Canadian Rangers and around 150 people combing the Lorne Creek area" including "shoulder to shoulder sweeps" without any physical clue that the men had ever been in the area.

As the RCMP spokesperson put it, "The bush up in this country is extremely rugged .... It's some steep terrain, very dense thick bush. The scenarios of what could have happened to these men are numerous. There are a lot of things that can happen to people in the bush in this country."

There's some obvious frustration in the SAR leader's comments. It's reported that these guys had fire at some point and heard helicopters but didn't seem to help SAR crews locate them.