"2-C-45 involved in a 401B, Respond C3"

"Units be advised, Panic Button pressed, Main and Seventh Street, 2-C-45 involved in a 401B, Code Red is in effect. Standby for further." "Units be advised, Level 3 All Call, with 2-C-45 involved in a 401B, Respond Code 3 at Main and Seventh Street." "Affirmative, Dispatch, all units are en-route C3." "Engine 10, Medic 10, Engine 95 Respond, officer involved in a 401B, Respond C3." "Engines, and Medic are en-route"