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This takes place after the events of Halo 3.

—

Chief: "You know me. When I make a promise..."

Cortana: "You... keep it. I do know how to pick 'em."

Chief: "Lucky me."

- Master Chief and Cortana, during the mission 'Cortana' in Halo 3.

I had to make this because, well, today is Master Chief's birthday. March 7th.

Happy Birthday, John.