Lt. Colonel Sheppard and Lt. Colonel Mitchell in “Unfinished Business”

Well, good luck, and listen, if McKay gives you a hard time, just…

Shoot him.

Also, he's mortally allergic to citrus.

Really?

I keep one with me at all times. [pulls a lemon from his vest pocket] It's just a comfort to know… [tosses the lemon to Mitchell] …it's there.