My 911 is a three button sequence on the GunVault next to my bed. It contains a Springfield 1911 loaded with 45 ACP Dynamic Research Technologies gut busting cartridges.
Also have a Ruger SR 1911 in a GunVault Speedvault right here bolted to my computer desk on my left, loaded similarly, and a ShotLock Shotgun Solo-Vault with a WWI Trench Shotgun Replica, 12 Gauge, IAC- Norinco on my right side.
The phone is for the police and coroner afterwards.
Suggest calling 911 WHILE you are involved if at all possible.
Remember to shout things like: “Drop the gun” “Get away from me” or whatever will record YOUR version of events.