Stargate Atlantis, Season 5

Lt. Col:
Sheppard: [on radio] Stargate Command, this is Sheppard.

Col. Carter:
[on radio] Sheppard, where are you?

Lt. Col. Sheppard:
[on radio] I made it inside. Look, I don't have much time until this place is swarming with Wraith so... I'm arming the nuke.

Dr. McKay:
What did he say, nuke?!

Col. Carter:
[on radio] John-

Lt. Col. Sheppard:
[on radio] Just do me a favor, when Atlantis shows up... tell 'em I say goodbye.

Dr. McKay:
Sheppard, this is McKay! Look, stop what you're doing, NOW!!

Lt. Col. Sheppard:
McKay?!

Dr. McKay:
Yes, it's me! I've got Lorne, I've got Teyla, we're on board the hive!

Lt. Col. Sheppard:
[confused] What?! But... how?

Dr. McKay:
Look, it's a long story, just... Important thing is, if you're about to do what I think you're gonna do, DON'T!

[later they meet up]

Lt. Col. Sheppard:
You guys are the last people I expected on this ship!

Dr. McKay:
Same here.