"What a loss to our country for a guy like that to die so young..."
So true. And if this charge has an ounce of validity it needs to be pressed with all haste and resource.
What many don't understand is that the term "criminal investigation" does not itself suggest the Army has any reason to believe the shooting was intentional. Dereliction of Duty / Gross Negligence can be a criminal offense under the UCMJ.