The North Carolina Medical Examiner's Office is in charge of the case and will conduct a full investigation, Raleigh police say.
Those who served are more likely than the general public to die by suicide, but an alternative treatment holds promise.
Deputy Garcia says his crisis intervention training prepared him for that night he saw the teen hanging over the ledge of a bridge.
"You're not alone."
Daveon Dunn, 23, reportedly died by suicide on Monday.
In its 22nd year, Sept. 10 marks another year of calling attention to the importance of mental health and suicide.