Army kids

My kids really are army kids. My son is 3 now. All the kids were playing in the house yesterday but the windows were open. He heard the 5pm bugle call (retreat) and he stopped what he was doing, stared out the window, and put his little hand over his heart. It was one of the cutest things I have ever seen. We've been working with the kids on stopping whatever they are doing if they are outside playing when this happens, but I didn't know if it was sinking in. I guess he's starting to get it.