Trying to keep pace with criminals who increasingly store damaging evidence on high-tech devices, the FBI today opened a digital forensics laboratory four times the size of a facility it used to plow through the files of energy giant Enron. “This is the shape of law enforcement for the future,” said Andrew R. Bland III, special agent in charge of the Houston FBI office. “Any police department in our area can submit evidence to this lab.” The expanded laboratory — equipped to store, copy and examine huge amounts of digital data — will serve more than 700 police agencies in a 40,000-square-mile area of southeast Texas…