Manning's sister Casey told the court-martial that both their parents were alcoholics, and that their mother drank continually while pregnant with Chelsea.
Motra e Manning, Casey, i tha gjykatës-ushtarake se të dy prindërit e tyre ishin alkoolistë dhe se nëna e tyre kishte pirë vazhdimisht ndërsa ishte shtatzënë me Chelsean.