Additional facts can be found in LVMetroPD's press conference on this event, found here:
The suspect vehicle was reported to have been seen fleeing the scene of a shooting at 0724 that morning. I'm sure that every officer Metro had on the streets that morning was alerted to be on the lookout for this vehicle. The chase began at 0931 and ended at 0935. It looks like the entire chase was presented in the video.
Lessons that I've taken from this incident and video:
1) Officer Umana has a warrior mindset. He was not going to allow the bad guys to get away, and once they started shooting at him, he was not going to let them continue to endanger other officers or the public. "Heroic" is a misused term these days; Officer Umana's actions fit the true definition of this word.
2) LV Metro has a policy against firing from or at moving vehicles, with the rare exception of cases when this action is "...absolutely necessary to preserve human life..." AND "...deadly force is the only option to preserve innocent lives." Officer Umana correctly determined that the suspects created a risk to the public, to him, and to other officers. Given the compressed time frame, the speeds reached once the pursuit began, the collision risks that the suspects' driving posed to the public, the serious nature of the crimes that the occupants were suspected to have committed, the suspects' use of deadly weapons against him, and Officer Umana's warrior mindset, it is difficult to disagree with his decision that shooting from a moving vehicle at a moving vehicle was justified under this policy.
3) Officer Umana's driving and pursuit skills looked great to me as a non-expert. Does anyone disagree?
4) Once Officer Umana lit up the suspect vehicle and the suspects began firing, the aggressive pursuit really became his primary option. Pursuing a vehicle with dangerous occupants without backup has to be done sometimes. However, it would seem prudent, if possible, to attempt to gather additional resources, prior to initiating such an aggressive pursuit. There is no evidence I've seen to indicate that Officer Umana either did or didn't do this. I hope that he did, but that the suspects somehow forced his hand.
This lesson might at first glance appear to apply specifically to police. However, consider that it has become a truism that it is risky for citizens to clear their dwellings or property on their own following a "bump in the night", and that its better to gather additional resources (spouses-armed or not, calls to 911, security camera feeds, information from alarm sensors, preparing response plans beforehand, etc.) which can help reduce this risk. This lesson applies to other situations that both citizens and police commonly face.
5) Officer Umana's grip (support thumb behind the slide both while shooting through the windshield and after he had left his vehicle), poor trigger discipline during his reload, and the botched reload itself indicated that he had not mastered the use of his handgun in stressful situations. Lesson learned: everyone who uses a firearm for self defense, officers and citizens alike, needs to do everything they can to gain and maintain mastery of their chosen tools in stressful situations.
6) It seems fair to say that shooting a) through your own windshield, b) at suspects in a moving vehicle c) that appears to be between 10-30 yards away from you, d) while driving your own vehicle, is unlikely to produce a high percentage of incapacitating hits on the suspects (see the first 46 posts in this thread). Note that Assistant Sheriff Tim Kelley said that Metro's policy on shooting at/from moving vehicles indicates that such fire is not to be used to disable a vehicle, only to incapacitate a suspect. Officer Umana fired 31 rounds during this event. Of these, 18 rounds were apparently fired from his moving vehicle and these rounds failed to incapacitate either suspect. Thirteen were fired at Miranda after Officer Umana left his vehicle. Officer Solomon fired his shotgun once, presumably also while outside his vehicle, immediately following Officer Umana's 13 rounds. These 14 shots did incapacitate Miranda, who later died.
Lesson learned: marksmanship matters. Those first 18 rounds that were unlikely to incapacitate the suspects (and which in this case did not incapacitate them) did land somewhere, and did put members of the public at risk. "Know your target and what's beyond it" is a universal rule of safe shooting for a reason, and applies to both citizens and officers. The doctrine of competing harms seems to apply, but the balance doesn't appear to tilt the right way for these shots.
Furthermore, the shots through the windshield and side window and the 13 round sequence looked a lot like "spray and pray". We write here regularly about training and practicing to improve our chances of "making each shot count" if we ever have to take a shot for real. And some of us actually do train and practice! This incident illustrates why everyone who uses a firearm for self defense, officers and citizens alike, needs to know that they have a good chance of "making the shots" that they choose to take.
A final comment: this video strengthened my gratitude to Officers Umana and Solomon (and their brother and sister officers around the country) for being willing to risk their own lives to protect me and my fellow citizens by removing dangerous individuals from free society. Both responded without hesitation to a very dangerous situation focused on protecting the innocents around them. Incredible. But, I think, not unusual.