Stamford/Greenwich and New Cannan are the homes to top CEO of major Financial companies. Louis Dryfus, USB Warberg, Xerox, Pitney Bowes, Champion International, GE Capital, Olin, Hyperion Software all make their headquarters here.
It is an easy ride into Grand Central by train and a short ride into the city by car. Many people who work in NYC Financial district live here and commute.
It is one of the highest target areas in the tri state area along with NYC itself, Indian Point and Groton Sub Base.
UBS Warberg also has the largest commodities trading floor in the world. It's huge.
And that stretch of I-95 is one of the most heavily traveled in the USA, allowing the bad guys to blend in with a crowd.