Agricultural Research Service Automatic Route Selection Air Rescue Service Automatic Restraint System Adaptive Receptive System American Rocket Society Army Regulations Assignment Requests Action Request System Alternate Route Selection Access Routers acute radiation syndrome Advanced Reconnaissance Satellite Advanced Record System Advanced Recovery System Air Reserve Station Air Revitalization System amplified response spectrum Atmosphere Revitalization System Attitude Reference System Accruals Reporting System Active Repeater Satellite acute radiation sickness Adult Reye's syndrome advance record system Advanced Reconnaissance System Aerial Reconnaissance and Surveillance aerial refueling store Agriculture Research Service Air Refueling Squadron Air Rescue Science Air Rescue Squadron Airborne Receiving System alizarin red S American Radium Society American Rhinologic Society Archive and Retrieval Subsystem Argentine Peso arylsulfatase Asbestos Roof Shingle