If a wildland firefighter has to take refuge in their shelter that is supposed to help protect them from the heat of a fire if they are entrapped, most likely the extreme fire behavior that requires this last resort action is caused partially by strong winds. So it makes sense to practice deploying the devices in conditions similar to what they would find if they actually had to use them.
The firefighters and staff at Big Cypress National Preserve in Florida understand this and fired up an air boat during the annual training.
Did something similar in the midwest using leaf blowers.