Fireworks are going off ahead of Independence Day.  Bravo TV's most tumultuous reality cast seems to be imploding before our very eyes on The Real Housewives of NJ.  Tensions between Theresa, Melissa, Jacqueline and Caroline are reaching the boiling point.  All will be revealed during Season 4, set to premiere Sunday, April 22nd at 1o p.m.  Watch this preview to see what we're in for!