The problem is that the equivalent (US) military acronym is "DOTMLPF" - Doctrine, Organization, Training, Materiel, Leadership, Personnel, Facilities. http://en.wikipedia.org/wiki/DOTMLPF I'm a systems engineer that works for the military and I've never heard of "POSTED", it may be a NASA thing since they kinda have their own flavor of SE.
I'm AU and the guys I deal with are ex-ADF so I don't know. I'm glad that there's a wiki link for that one though, that helps when I next have to reference it :)
Same idea either way - the system is far more than just the equipment/technology.
