“So at this point, we can reasonably assume that the two Americans in the Toyota were indeed CIA agents or trainers or employees of some sort. We can also reasonably assume that the federal police who shot them were not exactly out in Tres Marías “To Protect and Serve” Friday morning. The last big question that remains unanswered is whether or not the men were intentionally targeted because they were CIA, or American, or just traveling in a highly desirable hard car. Personally, if I want to steal a car for personal use, I’m not going to shoot it 30 times. However, if I want to kill someone IN the car and I know it’s armored, I’m going to try to breach the armor by concentrating all my fire in one spot - which is exactly what the shooters did, and exactly how Garner and Boss (cover names, it seems) got shot. I guarantee you, this is not standard FP protocol for dealing with ANY suspect who is unarmed and not actively posing a threat to officers. Stay tuned...”
http://borderviolenceanalysis.typepad.com/
This story is a near repeat of the attack on the ATF agents in Mexico, which happened right after they had started trying to trace some F&F weapons they found at crime scenes. So, if it is the same MO, is it not unreasonable to wonder whether FP agents in the employ of the cartels were involved in that assassination as well?
They would have been able to find out where the ATF agents would be, so they could waylay them. Also, it might help to explain why the surviving ATF agent apparently unlocked the armored vehicle doors and/or rolled down the window, allowing the assassins access to the vehicle, if he knew one or more of the attackers.