Maryland Business Occupations and Professions Section 19-401
§ 19-401.
  (a)   Except as provided under subsection (b) of this section, a licensed security guard agency may provide an individual for hire as a security guard only if the individual is certified by the Secretary as a security guard.
  (b)   A licensed security guard agency may provide an uncertified individual for hire as a security guard if:
    (1)   the security guard agency has submitted to the Secretary the application of the individual for certification as a security guard, fingerprint cards, and records fee as required under § 19-402(b) of this subtitle; and
    (2)   the Secretary has not disapproved the application; or
    (3)   the individual has obtained and currently possesses certification by the Maryland Police and Corrections Training Commission as a police officer.