gay mayor. that's christine quinn on the grill tomorrow. that's all for us right now. anderson cooper starts right anderson cooper starts right now. -- captions by vitac -- www.vitac.com good evening, everyone, it's 10:00 on the east coast. breaking news tonight. a little girl's battle for a life saving lung transplant just got some help, not from a doctor, but a judge. also ahead tonight, only on cnn, exclusive video showing the first lady, michelle obama handling a heckler, how did she handle the heckler and what happened? the white house gave her high marks. watch and decide for yourself. the moment you helped make possible. your viewers a hero today reunited with a woman whose life she helped save in the boston bombing. we begin tonight with breaking news, a story we've been following closely. a 10-year-old girl's battle to live. her name is sarah murnaghan. cystic fibrosis has destroyed her lungs. without a transplant, doctors say she will die possibly within weeks. sarah has been waiting for more