I might have agreed with you, until the US Navy admitted it's encountering aircraft it can't identify, which in some cases have been described as defying our un

I might have agreed with you, until the US Navy admitted it's encountering aircraft it can't identify, which in some cases have been described as defying our understanding of physics and aerodynamics. Being able to identify aircraft is a necessary pre-requisite for air defense because without that capability you might shoot down an airliner or ignore an incoming missile. So either $700 billion a year isn't enough to buy an effective air defense capability or something else is going on.