What, according to the video, does the military seem to be doing about treating PTSD among its personnel?

What is the biological basis of PTSD? What occurs in the brain and nervous system that apparently gives rise to PTSD symptoms?
How did the soldiers depicted in the video exhibit PTSD? What were their symptoms? How long did they last?
What can be done to help people cope with PTSD? Consider both biologically and psychologically based forms of treatment or intervention.
What, according to the video, does the military seem to be doing about treating PTSD among its personnel? Do you think this approach is going to be effective? Why or why not?