A jumper explodes, Radek is injured, and Sheppard keeps showing up.
A/N: Many thanks to both zoe rayne and sherrold for their betas. This was written for the atlantisbasics challenge, and packmentality's prompt was: "Zelenka and McKay save Atlantis through extreme geekery. Preferably slashy, though friendship would work. Maybe a little Beckett on the side."