The son of two National Security Agency psychologists was sentenced to 25 years in prison by a Prince George's County judge yesterday in what authorities called a large-scale drug distribution network run out of the family's home in Anne Arundel County.

James Todd Hibler, 23, who pleaded guilty in Prince George's to drug possession and conspiracy charges, faces sentencing on additional drug charges in Anne Arundel County next month. The Anne Arundel charges carry a minimum sentence of 15 years without parole.

Hibler pleaded guilty July 20 to storing nearly 400 pounds of marijuana in the closet of a Prince George's apartment. The discovery resulted from a broader investigation in Anne Arundel that involved a raid on the Hibler home in Crofton, in which police seized 50 to 60 pounds of marijuana and nearly 12 pounds of cocaine with a total sale value of $780,000.

Authorities also confiscated $70,000 in cash, a bulletproof vest and various weapons, including automatic rifles and shotguns.

Hibler's parents and his 20-year-old sister also were arrested in the Nov. 3 raid. The sister, Jessica, was placed on probation, while charges against the parents were dropped.