Trying to find my reference books (not easy with re-decorating going on at the mo') to see how many op descents the Rhodesian Fire Force teams used to carry out in one day (I think at a push they could manage 3) - all dropped from low level in close co-ordination with heli-borne troops, armed helis and (if within range) arty and CAS. Year after year of tactically - and occasionally strategically - successful para ops.