What does bulk surveillance look like in action? According the case of Brandon Mayfield, it looks like a lot of loose ends and half-clues. An editorial in Al Jazeera America takes a look at the case, which saw a child custody lawyer from Portland, Oregon arrested on suspicion for the 2004 Madrid bombing, despite never having left the country. The problems started with two latent fingerprints left on a bag of detonators involved with the bombing.