Which document serves as a general message for requesting items?

The ICS 213 form is specifically designed for sending messages within the Incident Command System (ICS). It serves as a general means of communication to convey information and make requests, including the requisition of items necessary for incident management and operations. The layout of the ICS 213 includes sections for the sender, recipient, and content, making it an effective tool for formal requests and communications during an incident.

In contrast, the other forms listed have different intended purposes. The OF-296 is a voucher for claims or payments, primarily used for financial transactions rather than general messaging. The OF-297 is used specifically to document items that need to be transported, rather than for sending requests broadly. The OF-286 serves as an equipment repair or replacement authorization form, which is more specialized in its use than the ICS 213.

Thus, the ICS 213 is the most appropriate document for general requests, underlining its role within the structure of incident management communications.