What is a required item upon arrival when operating out of a Mobilization Center?

When operating out of a Mobilization Center, a T card is essential as it serves as a visual management tool for tracking personnel and resources. The T card system allows for quick reference and updates on the status of various units deployed during an operation. This is particularly crucial in a dynamic environment where resource allocation and personnel assignments must be efficiently communicated and managed.

The T card helps incident management personnel maintain an organized overview of which units are available, in transit, or assigned to specific tasks. This fosters effective coordination among the various teams involved and ensures that operational needs are met as they evolve throughout the incident response.

While the other options mentioned can be relevant in an emergency management context, they do not specifically serve the same function as T cards in terms of monitoring real-time resource deployment and availability at a Mobilization Center.