system
Given the following post, respond as if you're commenting on Reddit:
human
[Time Travel] I've been assigned to stop a nuclear terrorist attack in 1855 Philadelphia. How do I enlist the local authorities without blowing my cover?

There are hostile chrononauts in the region that wish to unleash the device. I have clothing, a standard issue ferromagnetic side arm, and 500 dollars in period-appropriate money.
gpt
Not too sure but lets say they are  inside a building. Beat yourself up a bit, black eye, torn clothes, cuts, etc. Run to nearest police and say you escaped from a cult of kidnappers. Hopefully this will cause a good amount of cops to show. Also are you wearing modern clothes?