We have a couple who apparently got lost in the Cleveland National Forest, south of me. They were doing Holy Jim Trail and didn't come back. We have some good weather and water shouldn't be to difficult to find. They had some bloodhounds out but they lost eventually the trail. That area is dense chaparral, so if they got off the trail it might be difficult to find them. OTOH chaparral is full of resources if you know where to look.
http://www.nbcnews.com/id/51393198/#.UVp0DRfQqRM
http://www.nbcnews.com/id/51393198/#.UVp0DRfQqRM