I have a friend who was in 10th Special Forces Group.

He explained this situation to me in detail.

A retired military service dog watches over his family.

She is not a pet.

A military service dog is a soldier's partner, it's battle buddy.

They're not leaving it behind.

It's getting on the plane with them, and they are leaving together.

They are a unit.

That's why when you see a police car, with a police dog, it's called a K-9 unit.

I'm not saying we didn't leave dogs, but It's likely those dogs hadn't 'graduated' yet.