Not trying to be arguementitive, but do you think a hobby rocket could have produced that much damage to the door?
Absolutely. In fact the bomber got lucky to do that much damage in that container. I don't know but I bet the container survived in-tact.
Your not argumenative at all. In fact yours is a good question.
I am by far no expert on this subject. I have just watched too many kids play around with powder and rockets and the white smoke plume that I saw was similar. Even when I threw grenades in the Army the smoke was grey. When the big guns did their thing the smoke was black.
White is sissy smoke.