Let's see if it can live up to its namesake, Vulkan;
Edit: added more stuff about ULA rocket;
Looks like they're planning on having reusability, although apparently not of the whole first stage like on Falcon 9. Also, midair recovery, which is an interesting choice.
Seriously, look at this shit.
Doing a backflip at Mach 5 with the external tank still attached, NBD.
Rumor has it that the scenario was possible in the sim with an intact shuttle, but in just about any case where you're doing an RTLS the shuttle most likely isn't intact (if it was you could just a transatlantic abort or something). There's also rumors that STS-1 was planned to be a test of the RTLS scenario, before John Young helpfully pointed out that was a retarded idea.