Here is a 2011 video clip of the evolution of the US Army Combatives program. I am glad to see that they are starting to address knife defense, dealing with people with your gear on and an M-4. This in my opinion is a good evolution for the Army!
Initially when Matt Larsen started the program it was in his words more of a morale booster and physical exercise because it would be unlikely to be used. Now it would appear that it is growing and starting to address soldiers needs more and more which is very good!