Engine 8 and Box 27 emergency unit (a former city bus) pictured.
The man standing closet to the "bus" appears to have a camera around his neck. Perhaps he was a newspaper photographer.
The man in the coveralls and what appears to be a helmet standing next to him could be a Box 27 member. Or maybe a representative of the gas or electric utility?
The man in the foreground, of course, is a Springfield firefighter.
Who's the other gent in the fedora? A lodge member? A reporter?