Anyone who has held military ucmj authority knows you don't say anything prior to an investigation to avoid inadvertently "influencing" the outcome of an investigation. Any defense attorney for Mark Kelly will pull this card on Pete with his tweets as exhibit A…there was no purpose to him opening his mouth there.
"Undue command influence, also known as unlawful command influence, is the improper use or appearance of a military commander's authority to interfere with a military judicial proceeding. This can include pressuring witnesses, intimidating court members, or influencing the outcome of a trial to protect careers or achieve a desired result, which is considered a serious threat to the fairness of the military justice system. Both actual and apparent influence are prohibited, with the mere appearance of influence being enough to violate military law."
"Undue command influence, also known as unlawful command influence, is the improper use or appearance of a military commander's authority to interfere with a military judicial proceeding. This can include pressuring witnesses, intimidating court members, or influencing the outcome of a trial to protect careers or achieve a desired result, which is considered a serious threat to the fairness of the military justice system. Both actual and apparent influence are prohibited, with the mere appearance of influence being enough to violate military law."