A landmark study performed by the National Institute of Standards and Technology in April 2010, showed the differences between crew size and efficiency in their ‘Report on Residential Fireground Field Experiments’
The study found that four-person firefighting crews were able to complete 22 essential firefighting and rescue tasks in a typical residential structure 30 percent faster than two-person crews and 25 percent faster than three-person crews.
Click here to read and see a video explaining the study. The full report can be downloaded at the bottom of the linked page.