Re: U.S.Marines studying Mindfulness
I really couldn't answer that question holistically since I am not a Marine and do not have insights to the overall feel for the trends over time with the Marine Corps.
I am going to meet with COL Bristol soon and will ask him this very question since he worked with Dr. Heckler-Strozzi. I talked to Dr Heckler-Strozzi briefly a few years ago when he was in DC at our dojo, but we didn't get into a deep conversation about this.
My guess is that Dr H-S would had hoped for more as is normal. As an institution, I am sure the Marine Corps like any, is slow to change or to adopt stuff like this wholesale. You have to be careful when you start messing with killing and controlled violence.