The planes will be flying at speeds of 70-80 miles an hour, possibly up to 100 mph.
The aircraft will only be two metres apart wingtip to wingtip and flying just 30 feet off the ground as they make their passes over the airstrip.
The two girls have been given instructions on how to signal to the pilots: Thumbs up and a big scream means they're enjoying themselves. Thumbs down if they want to stop.
And if the girls are feeling very comfortable they're hoping to attempt a 'superwoman' pose as well.
More top news
Here is the letter sent by the broadcasters to Prime Minister David Cameron's office in relation to the planned TV leaders debates.
Machete-wielding armed robbers tied up staff and customers of a north Manchester pub during a terrifying raid.
The South African Salvation Army has used a picture of a dress that sent the web into meltdown to raise awareness about domestic violence.