Tri-services panel in Jabalpur takes key decisions on maintenance and sustenance to boost inter-service synergy and joint capability. Jabalpur: Looking to strengthen inter-service synergy, a tri-services Principal Maintenance Officers’ Committee (PMOC) on Friday took key decisions on enhancing tri-services maintenance and sustenance issues, an official said. The meeting was held at the Military College of Materials Management (MCMM), a premier training and educational institute of the Indian Army located in the Civil.