A man shot and killed by an agent of the Bureau of Alcohol, Tobacco, Firearms and Explosives has been identified by the Bexar County Medical Examiner’s Office early Thursday morning.

Death is a topic hardly anyone enjoys discussing, but it’s a harsh reality that none of us can escape. For this KSAT Explains, our crew got a rare behind-the-scenes look into the Bexar County Medical Examiner’s Office to find out what happens when a body comes in with no trace of who they are.