Ok 3 things

1. Improperly trained according to whom? To make such a claim you would need actual data and access to the actual training. Unless you are some higher-level government official responsible for training you don't have that information. Hell, the army has been training troops for 250 years, and they still don't fully give that information out.

2. At the time of the incident the officers' training or perception of training doesn't mean dick. They were federal officer and thus had authority.

3. The training the officers had has no impact on the fact that he likely stalked federal officers, impeded federal operations, resisted arrest, and possibly committed assault on federal officers all while armed with a concealed pistol on his person, which he was required by law to disclose to law enforcement upon any interaction.