This is a field puzzle with 2 containers about two yards from each other. The "tweet" is around eye level; the "treat" is at ground level. To obtain the combination for the lock on the "treat", you have to figure out the "trick" (puzzle) on the "tweet". Once you discover the trick, you'll need this order of operations for the four identified numbers: XXXX.
To open the lock, align the combination that you discovered with the logo for the company that makes the lock. When you close the lock, make sure the combination is still aligned, otherwise it won't lock. After you close the lock, make sure to scramble the numbers.
Please make sure to put both the "tweet" and the "treat" back the way you found them.
There is some swag and a prize for the FTF in the cache.
Have fun!
Congratulations to mnloon for FTF!