Caper: Yes, we do have an innocent until proven guilty burden of proof in our criminal justice system and yes, these accused have every reason to believe that the prosecutors will have to bear the onus to prove beyond a doubt that they are guilty. However, in my decades of lawyering I've only ever seen a handful of examples where the accused was wrongly convicted or they were wrongly accused. The 18,000 federal inmates and the thousands of provincial bucket inmates pretty much speak to the diligence of investigating agencies and prosecutors that those accused of a crime were in fact guilty of the said crime. If the prosecutor can not beyond a reasonable doubt led evidence that will in all likelihood afford a finding of guilt, then your buddy will be acquitted and life goes on.
Now here's another little reality, most first time accused will plead their innocence as, "This is the first time I've ever been in trouble." What that means to those in the legal/law enforcement/incarceraton business is that it's the first time that person as been caught carrying on with their criminal behaviour. Very few first time offenders or accused are also new to the life of criminal behaviour and activity. Actually very few people are completely innocent of any criminal behaviour at any point in their life - from the shop lifting as a kid, to accepting the cashier's error of overchanging and not returning the money, to the intentional dangerous driving, to trying to sneak home in your own car after a night at the mess and a few drinks that got you slightly over the limit, to giving your 18 year kid a pack of smokes etc. It's all a matter of time that anyone engaging in that type of behaviour will get caught. and the deer caught in the headlight looks surface and the comment, "this is the first time I've ever been in trouble" are uttered.
And then this reality, as I mentioned above, there are a few incidents of a person being wrongly accused and worse a few more have fallen through the cracks to be wrongly convicted as well. However, in light of those very much publicized cases, LEO, and their agencies on the whole, do a careful investigation before information is laid to have the person charged with a crime. The prosecutor's office is also careful at reviewing the case prior to the formal charges with numerous thresholds to be met. With the current condition of our judicial system being overstretched in its resources, it is unlikely that much guesswork and judicial fishing trips for guilty persons are going on in the civilian and military courts. There isn't enough time in the day to deal with all of the what ifs and could bes... there is a very large percentage that your buddy had enough evidence against him to bring about charges which the prosecutor felt that given a fair and impartial trial of his peers which are presented with the evidence would in all likelihood be able to make a finding of guilt and convict.
The comments so far on this thread have all stated quites clearly, alleged and IF convicted. I haven't seen anyone as yet, rendering a finding of guilt.
Now to the numbered person who made the comment on PTSD, any one familiar with defences of drug offences knows that the small "I" insanity defence would only go to mitigate sentencing AFTER conviction. It cannot be offered as a defence to the alleged crime. As for your implications of PTSD being crap (and please clarify of you meant anything else), can you please post your credentials to which I would hope include either a designation of psychiatry or psychology and your publications and research that discounts the disorder.
As for the speculation to the actual sentence should a finding of guilt be rendered, unless the accused are now being charged under an act other than the NDA, it all just speculation.