Ok…since I asked @Kelex for a number twice and got no response either time I’m just going to pick my own. Fair? Fair.
I choose #8 - Going with the Wild Card and I’ll go with, of course, Hawkman’s Nth Metal mace. First thing I’d do is run over to the bus and bash the debris that has it pinned into small enough pieces that the vehicle is no longer in danger of being crushed. Next I’d tell the kids and the driver to move to the back while I break down the door and create a safe exit for them. Once they’re all out of the bus I use the mace to break through any debris or objects in our way as we proceed to safety.