Around 32 minutes, the pilots of the F-302s that are going to move the asteroid are wearing Daedalus overalls, while they are stationed on the USS Apollo. (The P.I.C., Major Lorne, is assigned to the Daedalus.)
A seated Dr. McKay is beamed up chair and all to the Apollo from the Atlantis conference room to inspect the 6 nukes. In the very next shot the chair is still there minus Dr. McKay.