Mass Rescue Operations MRO Home Chapters Philosophy & Focus Planning Resources C4 Training MRO Library G5 Conference Event Submit Material News & Articles Contact MRO Home Mass Rescue Operations - Menu MRO Guidance Chapters MRO Library Search Submit Material Amendments to the International Aeronautical and Maritime Search and Rescue (IAMSAR) Manual Resources MRO Library: Philosophy & Focus MRO Library: Planning MRO Library: Resources MRO Library: C4 - Command, Control, Coordination & Communications MRO Library: Train, Test & Learn MRO Library: MRO Conference Reports Supported By IMRF Mass Rescue Operations Guidance - 4th Edition - English