Check out this video sent to us by Francisco Palacios, owner of Ascendere SAS in Cali, Columbia. There seems to be a slight disagreement between the firemen and police on the scene of this training. What they are arguing over brings itself to light around the 00:46 mark.
There seems to be much debate about how to properly load the pulley on the track line. Ultimately the law does win, but they certainly are not right.