What type of missions requires only crew members with special training and qualifications?

Special use missions necessitate crew members with specific training and qualifications due to the unique operational requirements and safety considerations involved. These missions often feature specialized activities such as search and rescue, firefighting, or law enforcement operations, which demand distinct skills and knowledge that are not required for standard operations. The complexity and risks associated with these missions require that crew members be adept in specific protocols, emergency procedures, and, frequently, the use of specialized equipment.

In contrast, standard passenger missions typically follow regulated commercial aviation protocols, and while they do require trained pilots and crew, the training does not extend to the specialized skills needed for the unique challenges presented by special use missions. Public relations and aerial survey missions also may involve crew with specialized knowledge but do not inherently demand the level of specialized qualification that is a hallmark of special use missions. Thus, it is the nature and demands of special use missions that distinguish them and mandate the need for crew members with advanced training and qualifications.