Who must have a firearm permit according to the obligations outlined in the text?

An armed guard must have a firearm permit because their role involves carrying a firearm while performing security duties, which is regulated by law to ensure that individuals entrusted with firearms are properly trained and vetted. The requirement for a firearm permit emphasizes the need for accountability and professionalism in the security industry, as these individuals are responsible for protecting people and property.

Other roles, such as private citizens, law enforcement officers, and firearms dealers, have varying regulations concerning firearm permits based on their specific roles and the legal framework within which they operate. For instance, law enforcement officers typically have different qualifications and are authorized to carry firearms without needing a permit in the same manner as armed guards due to their training and authority.