Tandem 3 : A term to designate the use of two or more units of the same type (e.g. fire pumps , bulldozers, crews of fire fighters) working one in front of the other to accomplish a specific fire suppression job
The Canadian Interagency Forest Fire Centre (CIFFC), Glossary of Forest Fire Management Terms, Manitoba, Canada 2003. http://bcwildfire.ca/mediaroom/Backgrounders/2003_ Fire_Glossary.pdf, (For Fr - Canad) {474}