SKOWHEGAN — The good news Thursday during a retirement party for Becky Berry at the Troop C barracks was that 36 years of secrets were going with her, so they could all sleep well that night, said Col. Robert Williams, chief of the Maine State Police. The bad news was that 36 years of institutional knowledge, dedication and loyal service also was leaving with her. Williams, like many other people in the state police command staff, got his start as a trooper patrolling Somerset County as a member of Troop C.