PBN= “Performance Based Navigation”
https://en.m.wikipedia.org/wiki/Perf...sed_navigation
It’s under the auspices of ICAO so I’m not sure how much relevance it will have to a lot of what the military does but aspects of it (e.g. RNAV approaches, knowledge of the various procedures and requirements) is increasingly being checked/tested on a regular basis and qualifications added as licence endorsements in the civil world.....