Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

foreman.virtual.images_00014121.jpg
foreman.virtual.images_00014121.jpg

    JUST WATCHED

    How thermal imaging technology worked

MUST WATCH

How thermal imaging technology worked

CNN's Tom Foreman looks at how police in Watertown used thermal imaging technology to capture Boston bombing suspect.

How thermal imaging technology worked

CNN's Tom Foreman looks at how police in Watertown used thermal imaging technology to capture Boston bombing suspect.