... dispersed fleet of defibs?
How far away is "dispersed"? Looking at the Operator's Guide for Z-Series defibs, I notice that a Wi-Fi card is an option (only). So, at best, the overall system must be limited in range.
Maybe what we need is for every piece of kit (the defibs, in this case) to be able to report back using SMS. In other words, to have a cell-phone built in.
But why stop there; perhaps we should make that a smartphone, complete with IP address! Then the defibs could exchange selfies with the blood refrigerator, or whatever.