As the first responder's hand-held data application, AHLTA-Mobile enables users to immediately document injury, illness and care at the point of injury. It stores medical data until it can be transferred to AHLTA-T. Once AHLTA-Mobile encounters are signed and synchronized with AHLTA-T, information is distributed to the Medical Situational Awareness in the Theater (MSAT) application for medical surveillance, as well as to the Theater Medical Data Store (TMDS) where the data becomes part of a patient's longitudinal electronic health record (EHR).