The centerpiece, of course, is the green laser unit that’s powered by DeWalt ... a target card, a drop ceiling attachment, and a storage case to keep everything tidy when not in use.

A National Oceanic and Atmospheric Administration plane used a green laser Saturday to search the Potomac River for ...

DC-area residents living along the river might have caught a glimpse of the latest step in the response effort overnight Friday: A green laser projected over the surface of the water. As of Thursday ...