Hi Guys,
There is a sixth generation of CRM.
Coined in 1999 - the concept of "Threat management" as being an intrinsic part of the job, coupled with the (5th generation) concept of "error" being an ubiquitious part of humans in the system emerged.
The concept of flying from A to B is the same as swimming across a river. It basically should be easy if you can fly (swim). However, the sharks, currents, slippery river banks etc are the threats (some predictable - some unknown) are what make it difficult. Throw in a handful of errors because it is humans that are making the journey to complete the picture.
The latest CRM courses are now all about Threat and Error Management (TEM). The "classical" CRM skills - involving good communication etc etc are re - labelled as defences in the persuit of TEM.
Try these references - also from U/T - for a more complete picture.
http://homepage.psy.utexas.edu/homepage/group/HelmreichLAB/