Hundreds of these scurrying through the leaf litter a few hundred feet below the peak in a small area. About half consisted of a pair joined as these: a much larger dragging a smaller. I expected to get better pictures; alas, between the dappled light and their frenetic pace I couldn't do better than these.

Leptocoris? Specifically the Box Elder bug? This area is predominately Douglas Fir, but there were some broadleaf species.