[@Gunther] I love the scene, even tho there are flaws to it, but I suppose they are necessary flaws. that man yashida, reminds me of kei nishikori the tennis player

what's the difference between concussive explosion and a nuclear explosion? I googled 'concussive explosion' but didn't find any info about it. 

I don't know the difference. both release large amounts of energy and heat that create a blastwave made of gas, right?