Fun times. I'll be honest, very often people who become police officers here in California, especially in Norcal where Cody and I reside, do so for the money. Starting pay is often around 60 grand a year, which is considerably more then what other states pay LE. Quite often you hear people say they want to be peace officers merely to drive fast and have a gun, and thankfully they fail to pass the rigorous testing needed to obtain the job.
There are numerous ways to become a Police officer in CA. In Cody's example, the individuals probably went through, or were paid to go through, the local college police academy. In northern CA police departments lack the size to actually maintain their own academy, and allow colleges to educate the officers instead. The training can be completed in 2 ways. One is the standard approach, where you take up to 12 hours of classes a day, including physical conditioning, 5-6 days a week. This generally is done over a 4-6 month period, which does not seem appropriate for the amount of power the individual wields, but is long enough to weed out the "bad seeds." The second approach is training 2-3 days a week, 4 hours a day, for 14 months. This type of training is actually frowned opinion, due to the fact it is not as intense as the one mentioned above. Both have their pros and cons, and both culminate with the same certification.
Now this type of training is not common in the highly populated portions of CA, but that's how it is here in the most northern part.
For the most part, the deaths resulting from these types of chokes are due to numerous factors, not only the officer. Many times the suspect is under the influence of a narcotic, and their body is already weakened by their chosen drug, or they have preexisting health conditions the officer is not aware of. There is the possibility of the crowds turning against them, and interfering, or that the suspect has gone for their weapon (as someone has already stated).
Regarding the whole concept of "Proper procedure". Aside from CPR, where the officer commonly breaks the sternum, ribs, while performing it, local law enforcement does not have the sufficient training to make a difference. Now, in the case of CHP, which is a state wide agency, they are trained in emergency medical treatment due to the fact that they are often the first on scene in locations where paramedics may be quite far away. Also, interesting fact, all 911 calls made by a cell phone in CA are received by CHP, which places even more emphasis on well rounded training.
Now, this post is kind of worthless, due to the fact that many CA agencies have chosen to bane the use of choke holds, due to the possible legal repercussions. There are some agencies that still use them, but for the most part it's a "only if you have exhausted all other options may you do this, but remember if you do, and something bad happens, it's your #*& that will be in the media crosshairs."
In my personal opinion, as someone with a college degree in criminal justice (working on my second degree right now), and has been P.O.S.T. certified, choke holds are useful tools when dealing with violent offenders, but I feel the individual should have outside training, or previous experience, on using them. "I learned this at the academy, it must work," does not sit well with the general public here in CA, though we are highly opinionated and only believe in our own points of view....
Now I realize no one will read this, and it only pertains to CA, but yeah...I hope this doesn't confuse anyone, I have no idea why I wrote so much, and...be safe? x_x