Md. Code, Local Government § 5–207

(a) A municipality may establish and maintain:

(1) a fire department; and

(2) a police force.

(b) A municipality may:

(1) provide for the removal of fire hazards;

(2) control the use and handling of dangerous and explosive

materials; and

(3) prevent the discharge of firearms or other explosive instruments.

(c) A municipality may:

(1) pay rewards for information relating to crime committed in the

municipality;

(2) prohibit vagrancy, vice, gambling, and houses of prostitution in

the municipality;

(3) enforce all ordinances relating to disorderly conduct and

nuisances equally:

(i) within the municipality; and

(ii) up to one–half mile outside the municipal limits, except

where there is a conflict with the powers of another municipality; and

(4) prohibit minors from being on the streets and in public places at

certain hours of the night.