Agents of S.H.I.E.L.D., Season 5

Simmons:
[Shows Fitz a multitool] Do you recognize this?

Fitz:
Yeah. It's mine. After my injury, I got the number engraved because I couldn't remember the name.

Simmons:
See, that's the thing. [Shows him a newer but otherwise identical multitool] This one's yours. That other tool belongs to Deke, who got it from his grandfather.

Fitz:
He's my... our... grandson?

Simmons:
Yeah.

Fitz:
But... he's the worst.

Simmons:
I think he's perfect. Plus, his very existence proves that you and I make it to the Lighthouse... and live long enough to raise a daughter. Do you see what this means?

Fitz:
Yeah, I do. It means that our daughter's obviously gonna marry some belligerent space goon if she's gonna give birth to a Deke?

Simmons:
No, Fitz. It means you and I are invincible.