Before revision: The Advanced Multi-Mission Operations System (AMMOS) is a common set of services and tools created by the Interplanetary Network Directorate, a division of the Jet Propulsion Laboratory, for use in JPL's operation of spacecraft.
After revision: The advanced multi-mission operations system (AMMOS) is a common set of services and tools created by the Interplanetary Network Directorate, a division of the Jet Propulsion Laboratory, for use in JPL's operation of spacecraft.