Aesir,
The Navy says that flying inverted will result in significant cost savings. They believe that this action this will scare the enemy off without have to use expensive missiles. It's called the 'Top Gun' effect and it was developed by the renowned scientologist Mr. Tom Cruise.
Ascend Charlie,
Lower Rear Admiral Ican B. Bought (nickname 'Rectum') did not realize the extra cost of aerobatics engines. Wanting to continue the tradition of saving the taxpayer's money, he has stipulated that inverted flight will only be done during autorotations.