No, you shouldn't add that. A 12-year-old kid playing in the apartment complex parking lot where he is spending the night with his cousin can't be expected to react appropriately when he is suddenly confronted with two yelling cops - at least one of whom is pointing a gun at him.
I'm sorry, but this point you keep bringing up that the cop was in no real danger is moot. He had no way of knowing that. That is what YOU don't seem to get. And asking cops to always assume a gun is fake till proven otherwise is just the most unreasonable thing I've heard in years.
Obviously that apartment complex was near enough to the convenience store that it made for a good stake-out. Not to mention there is probably a very good reason they were at THAT complex. I hate this Monday morning quarterback stuff. You wave something that looks like a gun around a cop and ignore their calls to stop, you should definitely expect to be shot at.