12. Because if time travel is ever perfected, and you can bring all of them back to the Alamo, Davy Crockett, Bill Travis and Jim Bowie are going to think YOU THE MAN!Oh, admit it. Like you've never read a time travel story and thought "Dang, now if I had been there..."
In this spirit, I just finished re-reading Eric Flint's 1632 and, like always, came away thinking that the town of Grantville's biggest problem was that I didn't live there. "Okay, you five guys take these rifles in 8mm Mauser, and you five get these Mosins. You four get the .30-'06's, and make sure that the best shooter gets the Garand. K-frames for everybody!"