On Saturday, Sept. 18, at 10 a.m., the Philadelphia Police Department, partnering with its Police District Advisory Councils, will hold its Fourth Annual Police Memorial Bike Ride. The Ride begins at Smith Playground, 2100 South 24th Street (24th and Snyder Avenue). Registration is $20 for a T-shirt and $25 for the T-Shirt and after Ride Barbecue. This year’s ride honor’s the memory of Captain Frank Milillo, Lt. James Walker, Sgt. Joseph Youse, Cpl. James O’Connor, Police Officer Tab Ali and Police Officer Jose Novoa.