January 16, 2015 7:41 am Unity Choir Performs for Martin Luther King Jr. Day The Montgomery County group will be in Penn Valley, Pennsylvania to help celebrate Martin Luther King Jr. Day. US & World Videos 2:06 Arrests made in Delaware State University shooting that killed teen visiting campus 0:19 Police search for man they say installed skimming device on Bucks County ATM 9:52 Gun pulled on Pa. pastor: The Lineup 0:51 NJ state trooper dies during training exercise 0:28 Stevie Wonder offers advice to Lincoln University grads