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"Did you just say 'McKay'?" Rodney asked his voice a little higher than normal. Carson broke in "As much as I would like to know what's going on round here, she needs to go to the infirmary right now." Weir nodded to him "Lorne, West, go with him and watch our guest. Bates, Colonel, Johnson escort our other guest to the brig till we can find out who he is." The other Sheppard looked up at that "I'm staying with her; I'm not leaving her alone like this!" Several fingers tightened on their triggers. "You will go to the brig till we have established where you came from and if you're a threat" Weir threatened. The other Sheppard tried to stare her down but admitted defeat. "Just please keep me posted and… take care of her" Weir nodded to him "Hand over your weapons" Bates demanded. The other Sheppard did so and took off his vest. "I'll send Doctor Biro to do a DNA test and blood screen when I get to the infirmary." Carson said. The rest of the medical team arrived and helped Carson take away the unconscious newcomer while the rest of the security team took a very confused looking Sheppard to the brig.
"This is a bit weird" Colonel Sheppard said to Weir and McKay. Weir turned to McKay "Any ideas?" "Until Carson's finished I can only guess. Either he's a clone and they got mine mixed up or they're from an alternate reality. We've seen it back at Stargate Command on Earth." Sheppard interrupted "What do you mean alternate reality, you mean they exist!" "God, do I have to explain everything round here?" Rodney said, "Einstein theorised that there are an infinite number of realities where every outcome, every choice is played out. The SGC found a quantum mirror that could transport you to each reality but after another Samantha Carter come through with some military guy, I can't remember his name, Hammond ordered the mirror destroyed. Something I would have argued against if I had been there. Destroying a piece of technical brilliances just like that." Weir interrupted "What if they are from an alternate reality, then what?" McKay looked grim for a moment. "Two of the exact people can't exist in the same reality for long. If that's the case, we have to find a way to send them back as soon as possible before the temporal entropic cascade failure sets in and kills them." "Wait, what is that?" Weir asked. "It's an unusual side effect which emerges after several days of identical living matter co-existing within the same dimensional universe. It is marked by violent convulsions in which the foreign matter begins to take on phasing shifting. Theoretically the original individual would eventually develop the side effect so if you don't mind I'd like to figure this out before then. I'm going to run a diagnostic on the gate and see if I can find out what caused the explosion and whether it could cause them to jump realities." "Okay, keep me posted, Colonel, I want you to go see our guest in the brig, see if you can find anything about him, I'll go down to the infirmary and wait for Carson to finish with our other guest. Keep me updated." Weir said. "Right, be careful, we don't know what we're dealing with here." Sheppard said. The two parted leaving Rodney in the control room.
Just an in-between chapter. Next time we get to really talk to the new Sheppard. Please Review, I'd love them (Please remember it's my first ever fanfic) running away from the anger mob (Please don't kill me) I'm also NOT a scientist so I had to find the info on the gateworld site, so if it's wrong don't blame me. Just enjoy the story. It doesn't have to be prefect. I'm not trying to get published. I couldn't find a story like this on Atlantis anywhere, so decided to write one myself FOR FUN!