Keeping structures or equipment in a condition to serve the intended purpose. It includes cyclical or occasional actions to keep a facility fully functional during its useful life. It does not include operational actions (see B(13)) such as janitorial work. Examples of maintenance actions are: (1) Routine upkeep for bullet traps; (2) Replacing components of a facility, such as a roof, benches, or backstop that are expected to need replacing over the course of the useful life of the facility; and (3) Painting, adding gravel to a parking lot, adding road mix/sand to existing firing range surfaces, and replacing rotting boards