A young woman signals for help on a quiet Colorado highway—until a veteran biker understands her silent plea, and dozens of riders move in to surround the SUV

had only a few seconds to take in what he was seeing.

A young woman. A locked car. Two men up front. A red circle on her palm.

His expression changed, but his hands stayed steady on the handlebars.

He reached for the small radio clipped near his vest.

“Gray SUV. Route 70, eastbound. Young woman in the back. Red circle on her continue reading …