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Surveillance and monitoring are the tools of “ eternal vigilance ” , and the means available to the owner for identifying the need for works of maintenance or repair . Goals of this course include developing facility and experience with telescopes , computers , methods , catalogs , libraries , instruments ( CCD cameras in particular ) and assorted contents of the universe ; use of the * NEW * Student Astronomy Lab telescope for variable star monitoring , plus use of the 20 inch Alvan Clark refractor for measurments , observing and public instruction . Biologists Jenny Bryant and Karin Lehmkuhl are monitoring the regeneration of plants at the site , particularly changes in lichen cover because of its importance to caribou diet . FireProof 's enhanced Application Security and DoS Protection provide an additional layer of defense based on the real-time identification of over 450 attack signatures along with continuous monitoring and blocking of all suspicious traffic . At the end of the monitoring period , the Service will decide whether to relist , continue monitoring , or end monitoring .