Los Angeles County Fire Dept

[Guest]

I searched but cannot find the answer if it has been posted. Why doesn't LAFD or LACoFD use roll up doors. As somewhat of an add-on to that question, does LAFD and LACoFD try to "one-up" (i.e. compete) with each other or so they operate as each sees fit? I ask because in my neck of the woods, many of the suburbs do things because that's how they do it in XXX.