Bristow also has its own Global Standards division, a separate business unit who role it is to set and monitor operational and engineering standards throughout the company. This includes crewmen, since a member of this unit is an ex and very experienced (and originally military) crewman. This unit is very independant and not profit motivated, and quite used to making themselves very unpopular when they find something wrong!
So compared to the mil, we have our own internal standards division as the mil do, but we also have external monitoring from CAA, some of whom as has been mentioned, are experienced SAR pilots.
Therefore those ranting about the lack of standards / supervision / checking are talking out of their .....