Seems that the Vault-Tec person who comes to the front door in the E3 demo is prevented from entering the gate to get into that vault during the original trailer. He seems pretty upset about it too as he is stretching out his arms in disbelief. Too funny... but very typical Vault-Tec.

Also, anyone who went to Quakecon, can you confirm or deny if the person standing outside Diamond stadium during the E3 demo is Piper? The person also appears in the original trailer as well. Just curious... still a bit too far away to make out clearly.

I hadn't gone, but I seriously doubt that's Piper. Unless she's a Ghoul, I'm pretty sure that was just a random woman who looked like Piper.