(credit: Alex Proimos / Flickr) Two workers from the Department of Energy’s Idaho National Laboratory lost an undisclosed amount of plutonium and cesium from a rental car parked overnight in a San Antonio, Texas, hotel parking lot in a neighborhood known for car break-ins and other crimes, according to an article published Monday by the Center for Public Integrity. The loss of the highly radioactive material occurred in March 2017 and was discovered when the two workers awoke the next morning to find the window of their Ford Expedition had been smashed.