Criminal Minds, Season 3

John:
Here... Take this. It's my one-year medallion. Took me six years to get it. For the past thirteen years, I've never left home without it. Because I know if I forget that, I'll lose my gun, my credentials, my home... everything. Hold on to it.

Reid:
I only have ten months.

John:
I know.

Reid:
It's your most prized possession.

John:
It is.

Reid:
You're just giving it to me?

John:
No... In a couple a months, when you get your year, you can give it back to me.

Reid:
I really don't understand.

John:
You will.