August 22, 2012 7:28 pm Officer Walker's Mother Speaks Out Wayne Walker, mother of Officer Moses Walker, Jr. who was murdered Saturday morning sat down with NBC10’s Monique Braxton. US & World Videos 2:05 Wednesday's Child: Gianna 10:45 ‘Giant Heart' procedure: The Lineup 0:16 Philadelphia police department combines 2 police districts. This is why 0:36 Franklin Institute's Giant Heart to close for months. Here's what will come next 0:16 Philly's Rocky statue getting a spring cleaning