Ok. I'm recently retired Navy (VP), so I have no bias towards either the Army or AF. I'm just stating fact.

The fact is, he's expressed an interest in flying helos and going the reserve/part-time route. He's said this explicitly, so this is what I'm trying to help him with. It's also a fact that he can fly helos years earlier and fly them a lot more often as a warrant officer in an Army guard unit than he ever could as a reservist in any other service.

Do you understand the difference between most commissioned pilots and Army aviation CWO's? Army aviation CWO's aren't expected to be generalists who also do admin tours, get graduate degrees, etc like most of us commissioned O's after our first few tours. No staff/air/war college, no major squadron/wing/regiment responsibilities as they advance. No "up or out" after O-3 like us. Army aviation CWO's are specialists who spend their entire careers just flying. I get that you're trying to set him up for the airlines. If you read what I and many others said earlier, no one (including me) is recommending the Army guard for an airline career.

If his priority is to fly part-time and he likes helos, going Army guard as a warrant is the way to go. If he wants to go airlines and that's his priority over all else, a guaranteed UPT slot with an air guard heavy unit is obviously the way to go. No need to tell people to "go no where near" the Army.