USAR, SWAH & Line Resue USAR, SWAH & Line Rescue USAR, SWAH & Line Rescue Crofton Engineering have worked with various Fire and Rescue Services to design, manufacture and install a comprehensive range training structures suitable for the following types of training Urban Search & Rescue (USAR)Confined SpaceSafe Working at Height (SWAH)Shoring, breaking and breachingLine RescueCablewaySewer Rescue