BA (short for Breathing Apparatus) is what is worn by firefighters when they enter an area with dangerous breathing conditions (most commonly a burning building filled with smoke) and they use them to be able to breath easily while performing the emergency or rescue.
A firefighters breathing apparatus needs to be heat and flame resistance. When a firefighter uses BA, they tend to be connected with a tally to a BA Board as this tells how much oxygen is left in the tank this feature is seen from Series 9 onward but was used briefly in Norman's Pitfall & Rich and Famous.
- Jerry Lee Cridlington and Chief Fire Officer Boyce have yet to use BA.
- Auxilary Firefighter Trevor Evans has used BA once in Rich and Famous.
- The BA mask covered the entire face until Series 8 when it was replaced with a pair of goggles and a respiratory mask. The last use of the full face mask was in Floodlights, although some shots of it were seen in Series 10.