I think ppheli has the most correct facts; they fit in with the story I was told by one of the crew members; at a slightly later time he and I flew together quite often.
According to him, the Gazelle pilot was so desperate to avoid capture, at one stage he tried to mid-air with the Puma.
Knowing the Puma pilot as I do, the errant Gazelle pilot was lucky they locked him up as he might otherwise have been sorted personally with a baseball bat.
