Spot on piniped. Think Oz led them with civilian DME, T-VASIS and Interscan as well. Strip away the glitz and glamour from the good ol' US of A and you find a tired old dinosaur underneath. Health system, Education system and ATC systems are all the same- held together with string and sealing wax but lots of mirrors and marble to make it look good. We just make all the same mistakes as them but about 30 years later. NAS will be another.