Woah Dude,
Operationg $$ per hour for a helicopter gunship(sorry armed recon helo) vs cost for a utility helo?
$$ and timeframes involved in designing and testing a hook system on that platform, including countless hours of test flying $$?
Military red tape, plus lengthy CASA red tape $$?
Adding this special training to the Military helicopter pilot training syllabus- $$?
Prohibitive in modern Australia.