There has been plenty of noise from the skies over north-west Sydney this week.
The iconic Black Hawk helicopters have been in flight for Australian Defence Force counter-terrorism training around Sydney.
Residents may see or hear Black Hawk helicopters, vehicles, and soldiers carrying weapons and tactical equipment over the coming days.
Most activities will occur at night and training will involve the use of blank ammunition and pyrotechnics.
The Black Hawk helicopters have created quite a stir on social media in the Hills and Rouse Hill.
A large number of readers also submitted photos for our Black Hawk helicopter gallery.
- Have you spotted the Black Hawk helicopters flying over north-west Sydney? Email your contribution to email@example.com