Concur with WW. I joined in 1984 and left in 2012 having volunteered for T1 redundancy. I had a great time up to about the time that JPA was introduced and then felt the Service as a whole was rapidly becoming less fun and being "led" by misplaced MBA/commercial practices. Had I stayed in beyond 2012 I think I would have made some regrettable outbursts; it was time to go.