That is not real lol.
It might be, there are cases of US citizens converting to radical Islam and joining terror groups. Islamic State's main appeal is to young, disillusioned, loners and misfits - I imagine Iraq/Afghanistan vets in US society would be a fertile recruitment ground for them.
If the US were to undertake a "false flag" operation like creating Islamic State, then I'd imagine they'd do it with special forces and I'm pretty sure that tattoo wouldn't be serviceable for them.