According to the international building code, who must witness fire protection system acceptance tests?

The correct answer lies in the responsibilities and roles of fire service employees, who are specifically trained and designated to witness fire protection system acceptance tests according to the International Building Code. Their presence ensures that the systems are installed correctly and comply with safety standards, as they possess the expertise to evaluate functionality and adherence to fire safety regulations.

In contrast, while building contractors may be involved in the installation of fire protection systems, they are not impartial parties responsible for verification. Local government officials are typically involved in the broader regulatory aspects of building safety but do not specifically witness acceptance tests. Insurance representatives may assess risk related to fire safety but are not directly involved in the technical evaluation of fire protection system acceptance. Thus, the role of fire service employees is crucial as they serve to assure compliance and safety in the implementation of these critical fire protection measures.