This displayed his moral rectitude because he/she/they decided to help out and make sure their comrades were safe instead of caring about their own safety. This also proves that this Marine is selfless and was willing to help without any thought of their own well being.
Yes. Instead of getting on the helicopter , he stayed back to ensure that his friends were safe , before he was safe. This shows how the Marine put others before himself , which is usually the right thing to do in these situations, because they’re his friends so you would do the selfless thing like the Marine, showing moral rectitude.
