Giuliani stammered his way through a defense of tax dollars spent on a security detail for his girlfriend when he was New York's married mayor. "There were threats; they had to be responded to," Giuliani told NBC's "Meet the Press"....."Judith didn't particularly want it, but it was done because they took the view that it was serious and it had to be done this way." Giuliani has been dogged about how much his extramarital affair cost the city.