By MITCH SMITH and JULIE BOSMAN A security guard opened fire on a driver who rammed a truck into a synagogue outside of Detroit on Thursday, authorities said. No one inside the building at the time, including students at the synagogue’s preschool, appeared to have been injured. Sheriff Michael Bouchard of Oakland County, Michigan, said at a news conference that “at least one individual came to the temple; security saw him, engaged him in gunfire.” He said it was too soon to determine a…