As much as size. He goes for the burn. The script is witty, well, it's soppy and sentimental too, but that's expected when you're dealing with the big Bye Bye. Old Mother Earth is in line for smithereens. A few galactic outriders hit NY as a wake-up call, obliterating bucket loads of people and the usual landmarks.
Someone suggests a driller.
Stamper, aka Bruce Willis, whose particular talent is drilling for oil where no man drilled before, a sort of Red Adair of the down pipe. Dan's plan is to send Stamper and his team in a couple of space shuttles round the moon to land on the hurtling mass of asterock, drill holes, lay nukes, retreat to a safe place and light the touch paper. You haven't seen the team. The Dirty Dozen looked ready to boogie. These bozos look wasted.