; and (B) to unify the monitoring systems of volcano observatories in the United States into a single interoperative system. (3) Objective The objective of the System is to monitor all the volcanoes in the United States at a level commensurate with the threat posed by the volcanoes by— (A) upgrading existing networks on monitored volcanoes; (B) installing new networks on unmonitored volcanoes; and (C) employing geodetic and other components when applicable. (b) System components (1) In general The System shall include— (A) a national volcano watch office that is operational 24 hours a day and 7 days a week; (B) a national volcano data center; and (C) an external grants program to support research in volcano monitoring science and technology. (2) Modernization activities Modernization activities under the System shall include the comprehensive application of emerging technologies, including digital broadband seismometers, real-time continuous Global Positioning System receivers, satellite and airborne radar interferometry, acoustic pressure sensors, and spectrometry to measure gas emissions. (c) Management (1) Management plan (A) In general Not later than 180 days after the date of enactment of this Act, the Secretary shall submit to Congress a 5-year management plan for establishing and operating the System. (B) Inclusions The management plan submitted under subparagraph (A) shall include— (i) annual cost estimates for modernization activities and operation of the System; (ii) annual milestones, standards, and performance goals