Chat moves short, field-relevant text between teams over LoRa — and every message is compressed with Unishox2, a state-of-the-art short-string compressor. That fits roughly a third more text into a single mesh transmission, so you'll almost never hit the per-message limit on normal tactical traffic. It handles full Unicode, numbers and punctuation; you just type normally.
It rides ATAK's normal chat tool — there's no separate LANCE chat screen. Write to All Chat Rooms to reach the team, or pick a live map contact for a targeted 1:1 message that only the addressed node accepts. Incoming mesh messages land in your normal ATAK message list.
CASEVAC sends casualty-evacuation reporting as structured medical state rather than free text — priority, litter and ambulatory counts, critical status flags and the supported 9-line fields, with any notes compressed to fit. On the receiver it rebuilds a proper ATAK medical event, so the details stay consistent and readable instead of being typed out under pressure.
Chat and CASEVAC are part of LANCE Pro. On Enterprise they sit within organizational policy and governance, alongside fleet management and controlled deployment.