I just...wow. That. Was. Impressive.
Ignore cabbit down there; he/she is an idiot who has clearly never seen footage of a nuclear blast. It's not the explosion that kills you unless you're within a one mile radius of the epicenter, it's the shockwave and the intense heat. That's something I feel you captured incredibly well, as well as the attention paid to all of the tiny details. The animation is great, though the lead character's legs -do- look a bit wonky, but that's really a minor gripe to a very well put together piece of animation.
I quite look forward to seeing the continuation of this series. Good beginning to it and a very, very realistic plot that Tom Clancy would probably even be proud of. Depending on where it goes.