Your story was good-until the last paragraph. Then it stepped into greatness. The countdown framework worked really well, too.
I'm glad you liked the last paragraph--it was a late addition.
At first, the story was just going to end with Arhcer's reflections. But then I got the idea to flash back to Russell's childhood, and it just seemed so fitting. Yet another contingency--the first link in the chain.
And you did an excellent job on Archer-"No, leave it in" was exactly the character's style. Bravo!
Thanks!