Believe it or not, but we had CSAR plans in the 60s and V-force crews were briefed on both need 2 know and a want 2 know basis. If they didn't ask we didn't tell.
And again in 1986, when planning reached the stage of agreeing which 4 cabs were to be converted, where (1 in UK, 3 in Cyprus) and by whom. The RN were agog at this split plan, but did offer an unwanted Jetstream III
to ferry Westland staff back and forward on a daily basis as they were a little unwilling to set up a forward design office in the Med. Anyway, the beancounters stepped in and the otherwise perfectly good plan came unstuck.