Thousands of federal prisoners have been leaving confinement early and returning to their communities as a result of changes to sentencing guidelines for drug-related crimes. Who will monitor the former inmates? The buck stops with Matthew Rowland, chief of the probation and pretrial services office at the Administrative Office of the U.S. Courts, NPR reports. Rowland was a federal probation officer in his native New York for 15 years. Now he’s responsible for a nationwide team that supervises about 225,000 people accused or convicted of federal crimes every year. Rowland has been able to hire 150 new officers to help deal with the big release of drug offenders. The officers started working with many of them a year ago, even before they left prison.