Teyla: Should we not have informed General O'Neill of our plan?
Sheppard: He knows we're here. We'll contact him again as soon as we get closer to the city.
McKay: Well, that is gonna be easier said than done. With all those hits we took, it's gonna be impossible for me to convert the shield back to a cloak.
Sheppard: And by impossible, you mean ...
McKay: I mean "not possible". What do you think I mean?