“Rodney, i’m going.”

“I am interpreting a bit, but it seems the field was designed as a sanctuary from the Wraith, but a place the last of the Ancients could travel to and hopefully ascend without fear of attack.”

Stargate Atlantis “Epiphany” 

Bonus: 

Sheppard in a nutshell

It’s okay, Rodney. Zelenka’s idea won’t work…..