Which of the following duties is NOT typically assigned to a District Chief?

The duty of confirming completed training reports does not typically fall under the responsibilities of a District Chief. This role is generally more focused on strategic oversight and operational management within their district, which includes overseeing station operations, monitoring compliance with personal protective equipment (PPE) standards, and maintaining equipment inventory levels. While overseeing the training of personnel is a part of the role, the direct confirmation of training reports is usually handled by training officers or other administrative staff who specialize in tracking and documenting training completions. Therefore, it is not a primary duty of the District Chief, making it the correct selection in this scenario.