Systems and methods for computer-aided, session-based operational and organizational responses to asynchronously occurring events. A “session” is a collection of client-server connections, each client connection being an endpoint device in a pool of devices under the control of the members of a defined operational response team cooperating to address an event. The session provides an organizational framework for information sharing, including using context roles to identify the proper recipients for data and messages. The information and data is shared to participating recipients in the session in real-time as the operational response is conducted, and as new data and information is generated, that data is added to the session with a timestamp. Once the response is concluded, the sessions can be closed, encapsulating the data, which can then be “played” back to re-experience the response as it played out, such as for audit, analysis, and review purposes.