What really puzzles me is why in the aftermath of the bombing, the Tsarnaev brothers drove round Boston for three whole days in a car registered to their home address and only got caught after being recognized by a police officer and fellow gym member, less than a mile from the outrage. We could ask Dzhokhar Tsarnaev except, he was shot in the throat/caused a self inflicted knife wound and spent most of the trial in a drug induced haze.