COMMAND SERGEANT MAJOR (CSM)=professional bad ass. In the future, when you hear a CSM on the stand, you will know his testimony is impeccable.
I'm not sure his credentials were clear to just anyone, until the persecution lawyer questioned him about it. It sounded like he was trying to belittle his service. He even told the jury to ignore that part of the testimony! But his awkward questioning opened the door for CSM Mesa to explain the gravity of the oaths he took, one of them on such-and-such a date (he remembered the date, how impressive is that). He bristled with pride when he spoke of his oath. The only thing the persecution accomplished was to make clear that this is an honorable witness who will not lie. I can assure you, that went over well with the all female jury. It had to.