Watch A False Alarm (1920) Online

Jerry his boss sees some kind of commotion from far away though it's only viewable from above a fence blocking the rest of it. So he and Jerry get a sheriff who when they arrive at the fence suggests a constable who then suggests a cop. In between all those encounters, we see them all take the long walks to various places of which one of those-up a hanging bridge-provides some good humour when they fall down on it a couple of times. When all of the above all gather together, they walk another long distance to the other side of the fence. (IMDB)