Several years ago in East Timor I was flying as a crewman on Russian MI-8s, assisting the loadmaster whenever Jordanian or Kiwi units required resupply.
On several occasions we arrived at LZ early and had to wait for pers from the recieving unit to arrive. When this happened the pilots would often leave the cockpit, with the helo turning and burning, and light up a smoke.
When it first happened I was a bit shocked, I asked the Loadie if it was safe, he mumbled a few words in broken English
and it soon became routine. I think I have it on video, I would post it but its on HI-8 and I don't know how to convert it to digital.