Yellow propeller-powered water bombers will be flying at low altitudes over Bunbury and Collie today as part of a training exercise for bushfire air attack supervisors.
Department of Environment and Conservation aviation senior fire operations officer Brad Bourke said residents should be aware there would be aircraft noise associated with the training.
The training is a joint initiative between DEC and Fire and Emergency Services Authority and includes participants from both agencies and local government volunteers to prepare operators to efficiently and safely fight fires from the air.
Mr Bourke said air attack supervisors coordinated water bombing and aircraft activity to support ground crews engaged in bushfire suppression.
The training also took place yesterday.