Engine Company 21
... that when the fireman's pole was invented at Chicago's Engine Company 21, other firefighters thought its use was crazy—until 21 started being the first crew to arrive at fires?
... that when the <a href="./Fireman's_pole" id="mwCq8" rel="mw:WikiLink" title="Fireman's pole">fireman's pole</a> was invented at Chicago's <b id="mwCrA"><a href="./Engine_Company_21_(Chicago)" id="mwCrE" rel="mw:WikiLink" title="Engine Company 21 (Chicago)">Engine Company<span id="mwCrI" typeof="mw:Entity"> </span>21</a></b>, other firefighters thought its use was crazy—until 21 started being the first crew to arrive at fires?