@hoistop:
I did again some research and though in all articles it says "Two firemen and two police pilots" but I found one article with minister of interior statement as follows:
Crew completed final manoeuvre when they practiced hoisting rescuer together with rescued person on the cable and they closed in to the group of their colleagues on the base.
Helicopter was in a kind of curve as both firemen were hoisted almost to the deck when helicopter crashed. It fell nose down and bounced back. From the distance it looked like if it landed safely but it was not the case.
In the accident both firemen - rescuers died, pilot and operator survived.
So yes, in that statement pilot + operator is mentioned.