Sean "Diddy" Combs is participating in a drug rehabilitation program in prison that could help reduce his sentence by a year, his spokesperson Juda Engelmayer said. The program is offered at Fort Dix, the federal prison complex in New Jersey where Combs will serve his sentence.Combs is "committed to sobriety, focused on healing, and trying to set an example for others," Engelmayer told the New York Times."Mr. Combs is an active participant in the Residential Drug Abuse Program (RDAP) and has taken his rehabilitation process seriously from the start," Engelmayer said.