Combat surgery has the same issue. Unit equipment and pt tracking hardware and soft ware are marketable and in the face of policy makers continually. The ubiquitouse use of individual augmentee systems and fast short rotations (poor retention of operational experience and little time to effect change if desired) are hindering system adaptions to changing missions and conditions. To compound it they keep changing the basic unit configurations and command structures to accomodate advancement in the staff corps involved.