Community Caretaking covers the firefighter-rule doctrine that lets officers help people without an investigative agenda. Cady v. Dombrowski for firearms in vehicles, vehicle occupant contacts, inventories, and the Caniglia v. Strom limit on home entries. The helping doctrine, used correctly.

All About Trespassing teaches officers to enforce trespass correctly and recognize the constitutional interactions. Three elements, the trespass affidavit tool, officer presence under Jardines and Jones, modern issues with auditors and squatters. Build the doctrine that supports both enforcement and your own lawful presence.