My old name, EjectedCasings was just something I thought of after I went shooting. I usually pick up the brass (cases) because my father does reloading. I thought it was a cool name, so I use it for most of my accounts.
As for my current name, IDK. Joined the "Fake" gang and used the first three letter gov't agency that wasn't taken that I could think of. ATF stands for Bureau of Alcohol, Tobacco, and Firearms (aka the holy trinity) for those who don't know. They're pretty much a pain in the ass if you want to get anything cool for your gun, though.