911 Operator: Central to Station 38, MVA (Motor vehicle accident), requesting additional rescue, fire and medical units. 10-20 (location) would be Maple St, Postal 2204. At least 1 casualty involved. Do you roger?

[Feel free to edit and put in your own scenario. You may be any role you want: Civilian, Firefighter, Paramedic, Rescue, 911 Operator, etc. It is adviced to describe your character.]