Crews met up on Monday, August 25 with trainers from both services to discuss procedures, scenarios and equipment.

"It was good to map out a scenario and go through each step to make sure we're all on the same page, and 99 per cent we are," Narromine FRNSW commander captain Ewen Jones said.

"We've got that mutual aid agreement that we support each other. They obviously follow our direction in our jurisdiction and we do the same for them when we're in theirs."

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Captain Jones said while FRNSW have had breathing apparatuses since 1984, and the RFS have just received them, both units have the same principal and working times.

"The breathing sets have evolved a lot since we got them in 1984, there's been heaps of differences, newer models and improvements like lighter weight, longer duration and stuff like that," he said.

"But basically both fire service units have the same principal, they've got the same cylinder pressure which gives you the same working time, they've got distress units so you can use it in two modes, so if you're down and unconscious, it will sound an alarm, if you are conscious you press a button and it sends out an alarm.

"We both work in pairs, which is important when you go into zero viability situations, each service basically mirrors each other in that respect."

As the future of water becomes scarce, the captain said the two brigades will be counting on each other even more.

"It's getting very serious," he said.

"We've always worked well with the RFS, especially in the last 10 years. We have combined open days, we always back each othe up. With the future of water looking grim we'll be counting on each other even more."

Captain Jones said the two brigades will next meet on September 23 for a combined practice drill in Merilbra Street.