Maryland Code, Public Safety § 6-602

(a) A person may not willfully interfere with or obstruct the State Fire Marshal, a deputy State fire marshal, or a special assistant State fire marshal while the State Fire Marshal, deputy State fire marshal, or special assistant State fire marshal:

(b) A person may not willfully interfere with or obstruct the State Fire Marshal, a deputy State fire marshal, or a special assistant State fire marshal in the course of conducting an inspection or investigating a fire or explosion.

(c) A person may not, with fraudulent design on person or property, falsely represent that the person is a State fire marshal or a sworn employee of the office of State Fire Marshal.

(d) A person may not have, use, wear, or display without proper authority, for the purpose of deception, a uniform, shield, button, ornament, identification, or shoulder patch, or a simulation or imitation of these articles, adopted by the office of State Fire Marshal.

(e) A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 3 years.