Families of survivors of the Robb Elementary School shooting have sued UPS and FedEx, arguing the two shipping giants violated the law by delivering a dangerous weapon to the gunman who slaughtered 17 children and two teachers in Uvalde. The lawsuit, filed late last month in Bexar County District Court, alleges the companies should be held responsible for delivering an AR-15-style rifle to the gunman along with a specialized system that they said allowed him to convert the weapon so it could fire semi-automatic or fully automatic bursts.