So basically, in hind sight, from my arm chair quarterback position, I would have had one or two officers approach from the center to do the "knock and talk" while two officers approached from the sides with weapons ready. The officers need to clear and safe the areas they are passing just as they would if they were inside a building where a bad guy could be waiting to ambush them.
I agree and to add to your point, an officer in an over watch/covering position. One man, preferably armed with a rifle but something is better than nothing, could have hung back at the street behind a cruiser with better view of the entire situation as it unfolded, probably could have IDd and dropped the shooter as he was getting off his first round, maybe sooner.
NCO of Marines, 3rd Award Expert Rifle, 236 KD Range
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011
REV. 19:11 And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.