There's a scenario that I first heard about on the History Channel. It's called
Luftwaffe '46. (For Luftwaffe 1946,) and I first heard about it on a History Channel special. Here's the scenario in brief: World War II doesn't end in 1945,
but goes into 1946. Germany develops its Volksjager, or People's Fighter, and
long range bombers capable of bombing New York. By 1946, according to the
special, the war had entered its seventh year, and both Germany and the Allies are fielding second- and third-generation jet fighters. The German long
range bombers were jet bombers capable of flying higher than the standard
piston engine fighters of the day and the American AAA. The German bombers were, according to the special, carrying nuclear bombs, and they dropped them on New York City. The special was called Weird Weapons of the Axis, and it also said that one German scientist, I forget his name, maybe you could help me out on this, was developing an actual space bomber. The
space bomber, in 1945-'46, was impossible.