http://snafu-solomon.blogspot.com/2016/07/usmc-f-18-hornet-broke-apart-in-flight.html
I have been wondering if a de facto disarmament of the US and its allies could take place - as existing 27 year old planes fall out of the sky while the F-35 is declared "ready". If it isn't, given its expense and upkeep, much of the Western world could find itself in trouble - and unable to recover militarily for years.