Maryland Code, Public Safety § 2-301

(i) preserve the public peace;

(ii) detect and prevent the commission of crime;

(iii) enforce the laws and ordinances of the State, counties, and municipal corporations;

(iv) apprehend and arrest criminals and those who violate or are lawfully accused of violating the laws and ordinances of the State, counties, and municipal corporations;

(v) preserve order at public places;

(vi) maintain the safe and orderly flow of traffic on public streets and highways;

(vii) cooperate with and assist law enforcement agencies in carrying out their respective duties;

(viii) investigate any death of an incarcerated individual suspected to be a homicide within or outside a correctional facility as provided in § 9-602.1 of the Correctional Services Article; and

(ix) discharge the duties and responsibilities of the Department with the dignity and in a manner that will inspire public confidence and respect.

(i) the sales of pistols and revolvers;

(ii) the licensing and supervision of private detective agencies;

(iii) the certification of private detectives and security guards;

(iv) the registration of eavesdropping or wiretapping devices; and

(v) the inspection of classes of motor vehicles as provided elsewhere in the Code; and