Long Beach Police are charging Jody Barcelona with "Leaving Dangerous Substance on Highway." Barcelona is accused of dumping several bags of roofing nails and tacks over the course of a few weeks.

If the nails or fasteners rust and fail, the shingles can succumb to gravity and/or be blown away in a moderate breeze. You should be very concerned about using inferior roofing nails.

Engineers demonstrated that the drone can autonomously position a nail gun on a nailing point, place the nail, and then move on to the next point. “For me, the biggest excitement of this work is ...