It's not enough to have the right tools; you also need to know how to use it.
SERA spends time instructing their counterparts in firefighting techniques like basic search procedures as well as pump and ladder training.
They also demonstrate proper use of equipment such as breathing apparatus and hydraulic cutting gear, commonly used to free people from road traffic accidents.
Training exercises like these can carry a risk of serious injury.
During the trip to the Serbian city of Kragujevac in 2017, one local firefighter failed to fully turn on his cylinder before entering a building filled with burning straw.
This led to him inhaling smoke into his lungs and he had to be taken to hospital for treatment.
He made a full recovery and was able to return to service with his colleagues.
Ultimately, Gary Bennett does not view their trips as aid drops.
"We are facilitating, we are empowering, we are equipping fire fighters – ordinary men and women – to do their job, to save the lives of ordinary adults and children."