An end to the hunt
Henneberry's call to police put an end to the hunt for the man suspected of planting one of two bombs that exploded near the finish line of the Boston Marathon, killing three and inflicting injuries on dozens more that are typical of wounds sustained in conflict regions such as Afghanistan and Iraq.
Before police stopped him, Dzhokar Tsarnaev, with his older brother, Tamerlan, allegedly shot a university policeman dead, hijacked a car at gunpoint, then fired upon and threw grenades at officers pursuing them.
Police shot and killed the brother, but Dzhokar Tsarnaev eluded them all day Friday -- until Henneberry's 911 call.
Before opening fire, authorities, using a bullhorn, called on the younger Tsarnaev to surrender.
A standoff followed. When it finally ended and police approached the boat, they were aware of the danger the armed man posed.
Unlike Henneberry, they used a robot to pull back the tarp over the boat.