381 APPENDIX FIR Fluids Integrated Rack FWD forward Gb gigabyte GC Ground Controller GGR&C Generic Groundrules, Requirements, and Constraints GHz gigahertz GMT Greenwich Mean Time GNC Guidance, Navigation, and Control GPC General Purpose Computer GPS Global Positioning Satellite GPRV Gas Pressure Regulating Valve Gr&C Groundrules and Constraints GUI Graphical User Interface HCS Hub Control Software HCZ Habitation Control Zone HDR high data rate HEPA High Efficiency Particulate Air HGA high-gain antenna HRS Heat Rejection Subsystem HSG Houston Support Group HTV H-II Transfer Vehicle H2 hydrogen H20 water HX Heat Exchanger IAC Internal Audio Controller ICC Integrated Cargo Carrier IDRD Increment Definition and Requirements Document IEPT International Execute Planning Team IFHX Interface Heat Exchanger IFM in-flight maintenance IMMT International Space Station Mission Management Team IMV Intermodular Ventilation in. inch INT Internal IO Information Only I/O Input/Output IP Internet Protocol IR In Review ISE Integration and Systems Engineer ISO Integrated Stowage Officer Inventory Stowage Officer ISS International Space Station ITCS Internal Thermal Control System ITS Integrated Truss System IV intravehicular JAXA Japan Aerospace Exploration Agency JEM Japanese Experiment Module JEM-EF Japanese Experiment Module Exposed Facility JEM-PM Japanese Experiment Module -Pressurized Module JEM-RMS Japanese Experiment Module Robotic Arm JOP Joint Operations Panel JPM Japanese Pressurized Module JSL Joint Station Local Area Network JSpOC Joint Space Operations Center kbps kilobits per second kg kilogram kN kilonewton kPa kilopascals kW kilowatt LAB Laboratory Lab C/O laboratory checkout LAN Local Area Network LA-1 MDM US Lab 1 Multiplexer/Demultiplexer lb pound LCA Loop Crossover Assembly LCD Liquid Crystal Display LCVG Liquid Cooling and Ventilation Garment LDR low data rate LEE Latching End Effector LEO low-Earth orbit LiOH Lithium Hydroxide LRP long-range planning Long Range Planner LT Low Temperature LTA Launch-to-Activation LTL Low Temperature Loop LVLH Local Vertical/Local Horizontal MB megabyte MBM Manual Berthing Mechanism MBS Mobile remote servicer Base System MBSU Main Bus Switching Unit MCA Major Constituent Analyzer MCC Mission Control Center MCC-H Mission Control Center-Houston MCC-M Mission Control Center-Moscow