In my military experience, some people just understand the job. Same with manufacturing. You can be as smart as Einstein, and not understand the job. But some people just get the ins and outs on a different level. This guy is close to that level, but not on that level. He should never have been to that coffeeshop unmasked. Or at least changed clothes in an alley. It clearly took planning, and some experience with a gun but assuming military training is a bit far. To me it looks like he understood the job, with no training. If he had training, he wouldn't have gone to Starbucks and wouldn't have used a rented e-bike (unless he used a prepaid card to rent it).