(a)    In this title the following words have the meanings indicated.

(b)    “Emergency” means a sudden or unexpected happening or an unforeseen combination of circumstances that calls for immediate action to protect the health, safety, welfare, or property of a person from actual or threatened harm or from an unlawful act.

(c)    “Police officer” means a person who in an official capacity is authorized by law to make arrests and is:

(1)    a member of the Department of State Police;

(2)    a member of the Police Department of Baltimore City;

(3)    a member of the Baltimore City School Police Force;

(4)    a member of the police department, bureau, or force of a county;

(5)    a member of the police department, bureau, or force of a municipal corporation;

(6)    a member of the Maryland Transit Administration Police Force or Maryland Transportation Authority Police Force;

(7)    a member of the University System of Maryland Police Force or Morgan State University Police Force;

(8)    a special police officer who is appointed to enforce the law and maintain order on or protect property of the State or any of its units;

(9)    a member of the Maryland Capitol Police of the Department of General Services;

(10)    the sheriff of a county whose usual duties include the making of arrests;

(11)    a regularly employed deputy sheriff of a county who is compensated by the county and whose usual duties include the making of arrests;

(12)    a member of the Natural Resources Police Force of the Department of Natural Resources;

(13)    an authorized employee of the Field Enforcement Bureau of the Comptroller’s Office;

(14)    a member of the Maryland–National Capital Park and Planning Commission Park Police;

(15)    a member of the Housing Authority of Baltimore City Police Force;

(16)    a member of the Crofton Police Department;

(17)    a member of the WMATA Metro Transit Police, subject to the jurisdictional limitations under Article XVI, § 76 of the Washington Metropolitan Area Transit Authority Compact, which is codified at § 10–204 of the Transportation Article;

(18)    a member of the Intelligence and Investigative Division of the Department;

(19)    a member of the State Forest and Park Service Police Force of the Department of Natural Resources;

(20)    a member of the Washington Suburban Sanitary Commission Police Force;

(21)    a member of the Ocean Pines Police Department;

(22)    a member of the police force of the Baltimore City Community College;

(23)    a member of the police force of the Hagerstown Community College;

(24)    an employee of the Warrant Apprehension Unit of the Division of Parole and Probation in the Department;

(25)    a member of the police force of the Anne Arundel Community College; or

(26)    a member of the police department of the Johns Hopkins University established in accordance with Title 24, Subtitle 12 of the Education Article.