Regulatory enforcement escalates in steps: inspection, citation, proposed penalty, a short window to contest, and referral for prosecution only in the gravest cases.
Military police forces sit inside the armed services, enforce a separate legal code, and answer to a chain of command. Here is how that system works, and where its authority ends.
Rank means different things in a city department, a sheriff's office, and a federal agency. Here is how the hierarchies fit together, and where they do not.
A signature, a sealed container, and a log entry at every handoff: the paperwork that decides whether a gun, a drug sample, or a DNA swab can be used against someone in court.