lifeline infrastructures are vital systems that support a nation’s economy and quality of life. modern economies rely on the ability to move goods, people, and information safely and reliably. adding to their importance is that many of the lifeline systems serve vital roles in disaster recovery. consequently, it is of the utmost importance to government, business, and the public at large that the flow of services provided by a nation’s infrastructure continues unimpeded in the face of a broad range of natural and technological hazards. the linkage between systems and services is critical to any discussion of infrastructure. although it is the performance of the hardware (i.e., the highways, pipes, and transmission lines) that is of immediate concern following an earthquake, it is actually the loss of services that these systems provide that is the real loss to the public. therefore, a high priority in protecting these systems from hazards is ensuring the continuity, or at least the rapid restoration, of service.

밑줄 친 구문이 도치구문으로 보이는데 맞게 보는 거지요?
즉, that many of the lifeline systems serve vital roles in disaster recovery is adding to their importance. 문장에서 that 절이 주어이구요. 답변부탁드립니다.