December 21, 2010 6:16 pm New Details on Search for Missing Mother Police marine units join K-9 dogs in the search for Diane Corado. US & World Videos 0:10 Overnight shooting in Delco town 2:02 Suspected gunman surrenders after barricading self in Chester County home 1:25 Residents in Montgomery County warned of possible fraud after mail stolen from collection boxes 2:09 ‘It feels like a slap in the face': Father responds to reinstatement of officer accused of killing son 1:41 11-year-old cancer patient receives floods of motivating letters from strangers near and far