This from Asher Heimermann:

As many as 17 people were reportedly shot on North Water Street in Milwaukee late Friday night. 

Ten ambulances from the Milwaukee Fire Department and 5 from Bell Ambulance responded to this shooting on Water Street near Highland.  I also saw MPD’s Tactical Enforcement Unit (SWAT) on scene, multiple officers had long guns.
 
This took place about two hours after an earlier shooting left 3 people injured one block away from the arena of the Milwaukee Bucks, an NBA team that had a playoff game against Boston just finishing up as the shooting took place.