While driving to winter field day, I heard lots of fldigi/flmsg messages sent and received during a drill on the W3EOC repeater system. They assigned municipalities to each operator to call them for reports.
I found the old AndFlmsg from sourceforge wouldn’t install on modern Android, so I couldn’t immediately decode messages.
I found and installed a new version of AndFlMsg, from a new provider. I’ll be ready to follow along the next time.