Article states...”The ability to map these massive underground facilities “is really critical to understanding where things are and areas that need to be identified and secured so that they can be dealt with later,” he said. It is “very, very important as part of that project.”.....
I agree wholeheartedly the significance of identifying where these are. My understanding is those ‘assigned’ to these underground facilities have signed suicide oaths that should they be breached, or look to, they will set off chemical weapons.