I finally called the deer park fire department (it's a joint service with Silverton) and asked them about testing the old deer park siren (the sterling M10 I won't shut up about).
The fire chief asked if I was talking about the old civil defense siren (unknown) or the siren used to call the firemen (the M10).
I know the Siren on the Silverton city building was taken down when it was renovated, and I don't think the jungle Jim's thunderbolt is in their jurisdiction.
From what I was told I thought the sterling was their civil defense siren.
Does anyone know what siren he's talking about?