A personal bodyguard.
A monitor assigned by the authorities to someone, such as a foreign visitor (to exercise control over their contacts with the populace) or a journalist or someone who is speaking to journalists (to monitor and control what they say).
One who minds, tends, or watches something such as a child, a machine, or cattle; a keeper.
An individual trained to medically stabilize people through various interventions, victims of trauma or medical events outside of a hospital setting and preparing them for transport to a medical facility.
An individual who is licensed at the state or national level to practice medical interventions in an emergency pre-hospital setting.