The Municipal Fire Chief or the assistant Fire Chief shall have the power during the time of a fire and for a period of thirty-six (36) hours after its extinguishment, to arrest any suspected arsonist, or other person hindering or resisting the fire fighting effort, or any person who conducts himself in a noisy or disorderly manner. The said officials shall be severally vested with the usual powers and authority of Municipal Policemen to command all persons to assist them in the performance of their duties.