There were at least 150 people and 35 teams looking for Ken Knight yesterday. Anyone wishing to help should follow the link in my original post. Things are well coordinated with Backpackinglight and VA SAR.

Hopefully things turn out well. When I have hiked with Ken I have observed that he tends to veer right soon because he cannot establish a visual reference point beyond a very short distance. Hopefully his phone is just lost, damaged or dead because if it were operating he would have contacted someone by now.