For the Oscar Formation, you need six planes and as one would expect, this forms a letter O. To create the Oscar Formation, the team starts with Double Vic. The number four (flying directly behind the leader) will slow down to fly behind the numbers five and six.
In this formation, the first three airplanes fly at the same altitude. The second set of three flies a bit lower to make sure they don’t fly into the number one, two and three’s propwash.