very important story we're following. >> plus massachusetts is facing its own state of emergency after a catastrophic pipe bringing water into boston. tap water is said to be unsuitable for drinking and the entire area is under a boil water area. as many as 2 million people may be affected by the crisis. the pipe is now dumping 8 million gallons of water per hour into the charles river. they insist water for firefighting can be maintained. tonight we're bringing new meaning to the term "political party." the white house correspondents dinner just beginning in washington tonight. and see how washington is getting this party started. make sure you stay with us. we're live at the red carpet in just moments. and guess who's going to be with us. you know her from hln. she has her own show and also the "view." joy behar and mr. mark preston to guide us through it all.