This section applies during a public emergency, as defined in § 14–301(e)(1) or (2) of the Public Safety Article, and when public safety is imperiled, or on reasonable apprehension of immediate danger of public safety being imperiled. During a time described in subsection (a) of this section, the authority to make an arrest without a warrant granted to police officers under this title is granted to a person who: is serving under a proclamation of a state of emergency issued by the Governor, as provided in § 14–303 of the Public Safety Article, as: a member of a law enforcement unit that is listed in § 2–101(c) of this title; or a member of the militia called into action by the Governor, as provided in § 14–306 of the Public Safety Article; is serving as a member of the militia ordered into active service by the Governor under § 13–702 of the Public Safety Article; or is a member of the armed forces of the United States under orders to aid civil authorities of the State in enforcing law and order, subject to subsection (c) of this section. The grant of authority under subsection (b)(3) of this section does not limit or impair any power or duty of a member of the armed forces of the United States or authorize any action incompatible with federal law or regulations.