How It Works: The Thermal Camera That Found The Boston Bomber

You can't hide from the infrared eye of the law. The night before police captured Dzhokar Tsarnaev, a convenience store robbery set off a series of events that included the death of an MIT police officer, a gunfight that ended with the elder Tsarnaev brother dead, and a 20 hour manhunt for the other alleged Boston Marathon bomber. The manhunt was accompanied by a citywide order to "shelter in place" (that is, stay at home and out of harms way) while police conducted a search of Watertown, where ...