The CAT (Coded Algorithm Transmission) is the communication tool used on the carrier to keep pilots up to date on various events.
If a message requires attention pilots will see an exclamation appear above the CAT icon.
Pilots can expect to see information such as notifications about squad invites, server status information, gameplay tips and also when in-game challenges become available such as the daily First Win Bonus.
If a pilot wishes to delete a message then they can do so by looking to the right of the message and selecting the 'Delete Message' option. Any message that is deleted will not be recoverable.