Ultimate Comics Captain America #4 (Of 4)

"Written by JASON AARON Pencils & Cover by RON GARNEY It's super-soldier versus super-soldier as Cap and Nuke throw down. With Captain America being pushed to his limits, there's no telling which soldier will come out standing. Superstar dream team of Jason Aaron and Ron Garney tell an explosive tale you won't be able to put down! 32 PGS./Parental Advisory"