I have been following Matthew Graham for a few years. From what I can see to that he believes in what he does and has the right idea when it comes from training. He believes that you should take all you can, be greedy when it comes to training. Instructors are there to give so it is ok to be greedy and take it all.
His latest YouTube video is something you should take a look at, especially if you are one of the civilian sheepdogs.
Lines, Lights and Lanes makes you think about how we are precondition to think inside a box that society builds for us.
Here is a link to his YouTube channel.