Original Message

Ground based Navaids are being decommissioned at a rapid pace.  Fewer and fewer airports have VOR approaches, much less DME arcs.  The US is even behind the rest of the world where RNP and GLS approaches are becoming the norm.  If you are checking people they should understand PBN, RAIM, WAAS, LPV approaches, and RNP, not ways to fix intersections with archaic 1950's radio equipment.  Time to join the rest of the world here in the 21st century.