Is a successful bank robbery possible in America today?

Even today in America, bank robberies are amongst the highest of all crimes. A famous American gangster from the 30s, John Dillinger said, "I rob banks because that's where the money is"! But with all the high tech equipment, surveillance and dye packed bills. Is it still possible to pull off a succuessful and lucrative bank robbery? I sometimes watch the ID (Internation Discovery) channel, and even in the mid 21st century there've been quite a few intelligent bank robbers, but like all criminals, they got caught because they didn't keep their mouth shut