This video has now been removed by the person posting it.
I am assuming that the reason this was posted is solely for educational purposes and not to make fun of a Southern Maryland firefighter who had the misfortune of not only falling off of a ladder, but doing so in front of an operating video camera. The caption says the firefighter was not hurt.
While my assumption about the motivation for the posting of the video may be in error, my very dusty recollection from fire school is there is an important lesson to be learned from the clip. Something tells me this video will now be used by many to illustrate that lesson.