Create Oppenheimer alone in front and behind him create an atomic bomb explosion

Create Oppenheimer alone in front and behind him create an atomic bomb explosion. I want you to make him in a regular suit that he always wore., and on his head a hat matching his clothes. I also want you to make him look like he's walking like in those secret agent movies where they walk slowly and coolly while he holds a cigarette ready to put it in his mouth., and make him head a little low to hide some of his face. And in the scene I want you to not be able to see anything other than the huge bomb that explodes violently behind him., but I want it to be extremely realistic