You remind me of my late aunt. She called the cops on her husband for smoking a cigarette. Despite the evils of tobacco {he quit smoking upon retirement} he managed to go from E-1 to LTCDR in rank and Captained a Gator Freighter as well. I'm certain he managed a drink or two along the way as well. But he joinned up for WW2 and got out in 1969.
Now as for the stress? Look at over deployments. What has congress or Rummy done about that? That kills more men by mistakes due to combat fatugue but you don't hear about a study on it. Let me tell you something about such things. When those ships deploy the line to see the JAG is as long as the pay line when the first mail call hits for divorce papers. should Rummy prohibit marriage as well?
The report you showed is Horse Hillary. One's lungs are not damaged to the point of pnuemonia by recently taking up smoking. They were in a third world nation for Pete sake.
You remind me how an addict talks. Lots of excuses to hold onto and condone chemical crutches.
That's all there are too is excuses.