I worked at the last National Airlines. The original National was based in Miami and then bought by Pan Am - later on the remnants of Pan Am were bought by Delta. The National I worked for was based in LAS an operated from 1999-2002. It was a good airline. I don't really know anything about the latest incarnation other than what I have seen on the internet. I was already at a major when they started up so I never tried applying there.