Lawyer up if you even think there is a chance of something happening.
I was #3 in a 4 ship where the flight lead got violated. I went straight to the ADC. Sure enough, a few days later, I was put under oath in the investigation. Talk to NO ONE without a lawyer. For me, that includes Wing Safety.
This was the 3rd time I've used the ADC.
My incidents were minor, obviously, and nothing criminal. But why someone would speak with investigators on a crime this serious without an attorney giving advice is beyond me.