March 13, 2009 8:21 pm Chester Co. Businesses on Edge A rash of robberies has businesses in Chester County on edge. Police say a gang of gunmen is terrorizing the community. US & World Videos 9:46 Another NJ earthquake: The Lineup 2:54 Penn leaders reiterate to pro-Palestinian protesters that they need to pack up camp 1:44 Pro-Palestinian protesters remain on UPenn's campus despite warnings to disband 1:30 Protests calling for ceasefire continue at Penn 6:33 Family affair: Former Eagle and new Eagle Jeremiah Trotter and Jeremiah Trotter Jr. speak out