Section 234e of the Michigan Penal Code does not define the crime of brandishing a firearm in public. The Michigan Criminal Jury Instructions, published by the Committee on Standard Criminal Jury Instructions, does not include a recommended jury instruction on brandishing a firearm. Research discloses that while the term "brandishing" appears in reported Michigan cases, none of the cases define the term.
In the absence of any reported Michigan appellate court decisions defining "brandishing," it is appropriate to rely upon dictionary definitions. People v Denio, 454 Mich 691, 699; 564 NW2d 13 (1997). According to The American Heritage Dictionary, Second College Edition (1982), at p 204, the term brandishing is defined as: "1. To wave or flourish menacingly, as a weapon. 2. To display ostentatiously. –n. A menacing or defiant wave or flourish." This definition comports with the meaning ascribed to this term by courts of other jurisdictions. For example, in United States v Moerman, 233 F3d 379, 380 (CA 6, 2000), the court recognized that in federal sentencing guidelines, "brandishing" a weapon is defined to mean "that the weapon was pointed or waved about, or displayed in a threatening manner."
Applying these definitions to your question, it is clear that a reserve police officer, regardless whether he or she qualifies as a "peace officer," when carrying a handgun in a holster in plain view, is not waving or displaying the firearm in a threatening manner. Thus, such conduct does not constitute brandishing a firearm in violation of section 234e of the Michigan Penal Code.