we have not tried this as of yet as we only have one pumper,but looking forward to trying it in a mutual aid scenario,when i was taking my firefighter 1 trainer course the one instructor had his three fire departments converge at the training ground and relayed three ladder trucks with monitors going on all three,he said that each successive truck had to increase pump presure to the next truck as they use the water they need to run the monitor on their truck,made for a nice picture pumping lots of water,

throw a ladder truck,ariel platform or 2 in the mix

We always find it difficult to effect actual pump triaining. We do complete pump training in classroom but when it comes to hands on training and doing it safely it requires manpower to man the nozzle and large  volumes of water.  The classroom instruction is important but without pumping and actual pump time the learning curve goes to the fireground in actual operations. After a great classroom theory, most of the time pump operation results in great training for nozzlemen and limited experience for the pump operator.

Focus on the pump training, eliminate the required manpower for nozzlemen and large volumes of water usage.  From basic pump operations,relay pumping to testing requirements for pumpers and hose, visit

firetrucktestinglc.com.

Use of a fold-da-tank 600 gallon for training 30000 gallon for testing, recirculate from draft, simulate two 1-3/4" and 2-1/2"" handlines. (train all day using the same water all lines are secure to provide a safe operation)  Your new pump operator now has the theory and a  hands on practicial application to flow continious water, safetly, efficiently with the instructors undivided attention.