so we have captain dekoaz on from the bureau of fire prevention but i will ask our other captain and talk about the role of bureau of fire investigation as it relates to fires here in san francisco. >> thank you chief and good afternoon supervisors. thanks for this opportunity to come by and answer any questions you might have, but first i would like to go over -- i don't believe this is set up on the screen but do you have a copy of the presentation? >> yes. >> okay. great. fire investigation basics i think there were some questions from i believe your office supervisor campos, regarding what exactly the arson task force, the investigative unit does after the fires? and we strive to investigate every single fire in san francisco. for the most part we. do the argon task force doesn't get involved unless there is some question as to what caused the fire. then we come in. we have specialized -- we're a specialized unit. our investigators are trained in fire investigation. they're also peace officers. they work hand and hand with the police department as well, so if we discover after th