By all means spell out the proper procedure for what was being done, and document how you never ever came close to violating it yourself.
1. (Mentioned in the article) ensure that no one is downrange (”in the room”, said the article, but that’s a bit excessive). Just make sure the business end will ALWAYS be pointed away from them, and preferable at the floor or an effective backstop.
2. Do not touch the trigger. Period.
3. For a semiautomatic, drop the magazine, then work the slide. If there is a round stuck in the chamber that will not eject, operate the slide release. This will permit the slide to be removed— away from the firing mechanism— and also permit dismounting the barrel (which includes the chamber) from the slide.
4. You will now be able to see a stuck round in the chamber, and there will be nothing capable of causing the weapon to fire. Even so, practice safety rule #1 and do not point the business end at anything you really like, such as a person.
5. In most cases you may now safely extract the round by hand. Worst case you may have to poke it out from the muzzle end, say with a cleaning rod.
As to the second half of your request for information:
I have had TWO unintended discharges. Both occurred because (in one case) I assumed that the person who handed it to me had cleared it, or (in the other case) that the safety was in the correct position. Both occurred when I pulled the trigger. Because of my adherence to the other rules of safe firearms handling, the bullets went into the ground or in the direction of our targets.
Please don’t hesitate to question us FR gun folks further. We are all willing and able to give assistance. Safe gun handling is the responsibility of every individual who wishes to exercise his God-given, Constitutionally-protected rights.