A LOUD buzz along our coastline yesterday signalled the impending arrival of world leaders for the G20 summit in Brisbane.
Caloundra Aerodrome was chosen as a base for military helicopters training for the G20.
The Black Hawk helicopters roared across the Coast on Monday afternoon and night and the early hours of yesterday morning.
Later yesterday, the skies were roaring again with the power of military fighter jets over Maroochydore and Alexandra Headland.
A Sunshine Coast Council airports spokesman said the council was only advised on Monday of the exercise.
"Airport authorities have not been advised of any further exercises," the spokesman said.
The low-flying aircraft had people wondering what the fuss and noise was all about.
"Bellvista got buzzed (pretty low) at 1.20 this morning by what appeared to be a huge military helicopter! Did anyone else hear its deafening rotors?" Phil Darwen said.
It is unclear if the airports at Caloundra or Marcoola will be used again for G20 training.
Update your news preferences and get the latest news delivered to your inbox.