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
President Barack Obama recorded a video urging for more to be done to protect the landscape from the effects of climate change.
David Cameron is facing growing pressure for the UK to take in more of the many thousands of migrants fleeing to Europe.
China has put on its biggest display of military might in a parade to commemorate victory over Japan in World War Two.