“dead astronaut”?
Jack!
And he recognizes Sam and thinks she’s dead?
Remember, in Jacob’s first apearance, he’s trying to get Sam into NASA.
And that isn’t a special effect. It’s a real Los Angeles class sub breaking through real arctic ice.
It’s all a hallucination - sort of.
Well, a Stargate of course.
Yah, what Sam said. Obviously!
Ooh, O’Neill’s pissed off.
“Who would make this shit up?”
Don’t like the split-screen debriefing.
General Landry!
He believes them.
Cameron doesn’t exist.
A grandfather paradox.
My brain, it hurts
“I think that would depend on who you ask.” 
Yeah, to the wider public, anyone who knew him would think that.
“You are literally a Grandfather Paradox.” 
Ba’al has been laying low for 70 years.
“Supposed to be is relative, Dr. Jackson.” Valid point. We don’t really get that in most alternate timeline stories.
Navy’s gonna run the Stargate?
Wow, they now have to go live “ordinary” lives.
That sucks.
Interesting look for Sam