Heard on Fox this afternoon about the shootings in PA.Police spokesman said that LEO's confronted perp....that perp fired on LEO's...that LEO's DID NOT return fire.Perp fled to bldg.took some hostages.....eventually LEO's talk perp into surrendering.I am wondering if Diallo case had something to do with LEO's not returning fire,when Perp fired at them at initial contact??