What pattern should be used to mark a Critical Facility?

The H pattern is specifically designed for marking Critical Facilities because it provides a clear and recognizable indication of the facility's importance. This marking method ensures that responders and maintenance personnel can easily identify the site from a distance, allowing for efficient and effective emergency response and management.

In contrast, other patterns like the X, circle, and square may not convey the same level of urgency or significance as the H pattern does. The H pattern, with its distinct shape, stands out in various environments and is well-understood within emergency management protocols, making it the preferred option for denoting critical infrastructure. This clarity in marking helps prioritize responses to facilities that are essential for public safety and operations.