I hate seeing fire damage, and especially to things which I collect and restore. I'm hopeful that the siren will be put back in shape. Usually in the case of a public building and public property destroyed, it's up to the accountants and the county or city treasurer to decide if it makes sense to repair, or to buy new with various tax writeoffs, etc. If insurance is involved, often they don't want anything repaired except to rebuild the structure itself. The reason is that even if the item is barely damaged, the insurance company can be held responsible if the item breaks down later on, because it could be alleged that the fire caused hidden damage to the item, and thus led to early breakdown. Even if that's a bunch of bull, they often refuse to repair things for that reason.
Charles