Haw. Rev. Stat. § 121-33: Interference by civilian, penalty.

Every commanding officer when on duty may ascertain and fix the necessary bounds and limits to the commanding officer's parade or encampment. Whoever intrudes within the limits of the parade or encampment after being forbidden, or whoever interrupts, molests, or obstructs any officer or soldier while on duty shall be guilty of a misdemeanor and shall be punishable by a fine not exceeding $25. The person may be put and kept under guard until the parade, encampment, or duty is concluded. The commanding officer, as soon as practicable, shall turn over the person to any police officer.