A Ventura educator remained hospitalized Tuesday after a decades' old round of military ammunition he used as a paperweight exploded in his classroom, authorities said. Robert Colla, an instructor at the Ventura Adult Education Center for five years, suffered severe damage to his right hand when the device detonated Monday afternoon. None of the more than 20 students in his computer drawing class was injured, officials said. Co-workers said Colla found the large piece of ammo — believed to be a 40-millimeter round — when he was a child and thought it was harmless. It was a regular fixture in...
