He’s crazy to be giving an interview.
Agreed. If he was there to protect property and was with others:
1) Where were the other members of his team?
2) Was the team briefed on use of force laws in WI, talking with the media during operations, etc?
3) What was the team using for comms?
4) What if the team members gets separated? Do they have a known safe/secure area they can go to?
5) If they are engaged by a hostile force, what is the plan? Do they break contact and form a hasty defense?
6) One of the interviews said that he was there too also provide first aid. Did the team have a Casualty Collection Point established?
This kid went into essentially a combat zone with what sounds like not much of plan because his team let him down. They were unprepared for events of that night. Because apparently just having a few long guns is all that the team thought it would take? Training? Tactics? Anything?
Those interviews were before the shootings, that's evidence in his defense.
Stated his intentions.
HE NEEDS A LAWYER NOW!
He should not be speaking to anyone at this point. That is why you hire a lawyer.