Abstract: The characteristics of a crisis cannot be predicted and no two crises are alike. The responders in a crisis also vary creating two axis of uncertainty that inhibit rapid and accurate scope definition of a crisis. How and what a responder chooses to communicate in a crisis can impact subsequent response efforts placing importance on the clarity and cohesion of information exchange. Training and increased practice of clear and accurate message content between responders is proposed to improve the situation details needed for rapid scope identification. SMS text-messaging is one viable, mobile interoperable communication technology, accessible for everyday use. This research studies message content exchanged between responders and begins with the message-prompt to message-response relationship during crisis response training. A web-enabled training application has been designed to simulate two-way SMS text-message exchange and captures communication responses based on defined task prompts. Leveraging Speech Act Theory and the use of plain language protocols for communication exchange, the SMS text-message responses are assessed for ongoing training and practice.