Facts and statistics confirm the chief's comments.  

2 police officers among 7 shot in West Philly;...
6abc.com/news/2-officers-among-7-shot-in-west-philly;-gunman...

15 hours ago ... 2 police officers among 7 shot in West Philly; gunman, 1 victim dead ... ambush- style attack that led to a fatal shootout in West Philadelphia. A civilian and the gunman are dead. WPVI. Saturday, September 17, 2016 08:40AM.