The mid marks on a coupling drop deployment

All of our attack lines have a 25 ft mid mark painted or taped on the hose. This signifies the half way point of a 50 ft section of hose and assists in the deployment of the bundle or hose movement.
This video is on the 3rd floor of an apartment complex where a 100 ft bundle of hose is being put into service. A coupling drop is utilized to have the hose connect to a water source. When the yellow mid mark is exposed it signifies that 25 ft of hose is hanging off of the balcony and we have 75 ft of hose left to work.