Each firefighter carries a passive chip built into their helmet. On scene, Command taps each helmet and the board fills in. No signal, no app on your end, no battery.
Compared to hundreds or thousands for a commercial accountability system. The chip is passive, it needs no power, works with zero cell signal, and it is embedded in gear you already wear.
Command taps each helmet as the crew forms up.
Command taps names from the roster off a radio report. No scan, no range.
A firefighter checks in on their own phone over the scene network.