More grist for the mill:

George Zimmerman was fired from his job as an under-the-table security guard for “being too aggressive,” a former co-worker told the Daily News. Zimmerman, at the center of a firestorm for shooting an unarmed black teenager a month ago, worked for two different agencies providing security to illegal house parties between 2001 and 2005, the former co-worker said. “Usually he was just a cool guy. He liked to drink and hang with the women like the rest of us,” he said. “But it was like Jekyll and Hyde. When the dude snapped, he snapped.”

The source said Zimmerman, who made between $50 and $100 a night, was let go in 2005. “He had a temper and he became a liability,” the man said. “One time this woman was acting a little out of control. She was drunk. George lost his cool and totally overreacted,” he said. “It was weird, because he was such a cool guy, but he got all nuts. He picked her up and threw her. It was pure rage. She twisted her ankle. Everyone was flipping out.”

The year 2005 was a bad one for Zimmerman: he was arrested for fighting with a cop trying to arrest his friend for underage drinking, and he and his ex-fiancée took out protective orders against each other. The former co-worker, who is no longer in touch with Zimmerman, said he was shocked to hear what happened Feb. 26 in a gated community in Sanford, Fla. “He definitely loved being in charge. He loved the power. Still, I could never see him killing someone. Never,” he said.