Congrats! You've won some items.
Dog flu serum
Looks like a perfectly good dose of serum. I guess it'll come in handy if you come across anyone with snout fever.
Binoculars
These provide a great view down the Darjeeling tracks. You stand at mile marker 20. Looks like everything proceeds straight ahead until mile marker 14, at which point a second line comes in and there's a switch in the tracks. Also, looks like there's a small station at mile marker 16. Down at mile marker 12 the two tracks merge into one. That's about as far as you can see.
Schematics
Looking over these plans, and they seem to indicate that botching the next challenge, just completely misfiring, might actually provide a small personal benefit for a limited number of players if they can find a way to reuse those bullets.