[s1e20] The Siege: Part 2 -

A Mark II Naquadah generator used to finally activate the Ancient Control Chair, though the city's drone supply is revealed to be critically low. Friction and Failures

With the Wraith overrunning the city, Weir is forced into a hostage situation with the Genii to trade for prototype nuclear weapons. Back at Atlantis, Rodney McKay and Radek Zelenka work through exhaustion to complete the unfinished Genii bombs. The episode concludes on a gut-wrenching cliffhanger: [S1E20] The Siege: Part 2

Railguns and Naquadah-enhanced nuclear mines deployed to intercept the approaching Wraith Hive ships. A Mark II Naquadah generator used to finally