Around fifty thousand people are expected at Ohakea today, for the Air Force's 75th birthday.
Planes from Australia, New Caledonia, and the US are joining today's airshow.
Group Captain Darryn Webb says it's a great way to demonstrate the roles and capabilities of the Air Force.
"The theme of the issue is 'yesterday, today and tomorrow' and so we've got the full range of World War I fighter aircraft.
"There's a mock attack between a German and a British aircraft, right through to what we call the 'heavy metal' aeroplanes of World War II so the Spitfire, the Mustang."
