A member of a visiting force acting in the course of his or her duties, except civilian personnel—
(a) may, after approval from the competent Authority of Saint Lucia, and if authorized to do so by orders of service authorities of the visiting force, possess and carry explosives, ammunition and firearms; and
(b) where paragraph (a) is satisfied, the member of a visiting force shall not be subject to the criminal law relating to unlawful drilling or the making or possessing of explosives.