SUNSET VALLEY, TX - MARCH 20: FBI agents collect evidence at a FedEx Office facility following an explosion at a nearby sorting center on March 20, 2018 in Sunset Valley, Texas. A package, reported to have been shipped from this store, exploded while being transported on a conveyor shortly after midnight this morning at the sorting facility in Schertz, Texas causing minor injuries to one person. The explosion is believed to be related to several recent package bombs that have been detonated in Austin, Texas. (Photo by Scott Olson/Getty Images)