DNA on T items

You understand DNA'ing a death station isn't supposed to help ID if it can explode, right? Its to find the T who placed it. I can ask the detectives all day long, they still won't know.

 

I understand that but still we have enough DNA'able items as it is. I just don't think that something that's supposed to be placed out in the open should be so easy to trace back to the traitor.