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PSGP Program Appendix | 2023 Page G-7 <br />Additionally, the Joint Explanatory Statement (JES) accompanying the FY 2023 DHS Appropriations further <br />requires recipients to certify they have reviewed the Industry Alert on Chinese Manufactured Unmanned <br />Aircraft Systems, and completed a risk assessment that considers the proposed use of foreign-made sUAS to <br />ascertain potential risks (e.g., privacy, data breaches, cybersecurity, etc.) related to foreign-made versus <br />domestic sUAS. <br />Acquisition and Use of Technology to Mitigate UAS (Counter-UAS) <br />In August 2020, FEMA was alerted of an advisory guidance document issued by DHS, the Department of <br />Justice, the Federal Aviation Administration, and the Federal Communications Commission: <br />https://www.dhs.gov/publication/interagency-legal-advisory-uas-detection-and-mitigation-technologies. <br />The purpose of the advisory guidance document is to help non-federal public and private entities better <br />understand the federal laws and regulations that may apply to the use of capabilities to detect and mitigate <br />threats posed by UAS operations (i.e., Counter-UAS or C-UAS). <br />The Departments and Agencies issuing the advisory guidance document, and FEMA, do not have the <br />authority to approve non-federal public or private use of UAS detection or mitigation capabilities, nor do <br />they conduct legal reviews of commercially available product compliance with those laws. The advisory <br />does not address state and local laws nor potential civil liability, which UAS detection and mitigation <br />capabilities may also implicate. <br />It is strongly recommended that, prior to the testing, acquisition, installation, or use of UAS detection <br />and/or mitigation systems, entities seek the advice of counsel experienced with both federal and state <br />criminal, surveillance, and communications laws. Entities should conduct their own legal and technical <br />analysis of each UAS detection and/or mitigation system and should not rely solely on vendors’ <br />representations of the systems’ legality or functionality. Please also see the DHS press release on this topic <br />for further information: https://www.dhs.gov/news/2020/08/17/interagency-issues-advisory-use-technology- <br />detect-and-mitigate-unmanned-aircraft. <br />Sonar Devices <br />The four types of allowable sonar devices are: imaging sonar, scanning sonar, side scan sonar, and three- <br />dimensional sonar. These types of sonar devices are intended to support the detection of underwater <br />improvised explosive devices and enhance maritime domain awareness. The eligible types of sonar, and <br />short descriptions of their capabilities, are provided below: <br />1)Imaging Sonar: A high-frequency sonar that produces “video-like” imagery using a narrow field <br />of view. The sonar system can be pole-mounted over the side of a craft or hand-carried by a diver. <br />2)Scanning Sonar: Consists of smaller sonar systems that can be mounted on tripods and lowered to <br />the bottom of the waterway. Scanning sonar produces a panoramic view of the surrounding area <br />and can cover up to 360 degrees. <br />3)Side Scan Sonar: Placed inside a shell and towed behind a vessel. Side scan sonar produces strip- <br />like images from both sides of the device. <br />4)Three-Dimensional Sonar: Produces 3-dimensional imagery of objects using an array receiver. <br />Maritime Domain Awareness <br />Maritime domain is defined as “all areas and things of, on, under, relating to, adjacent to, or bordering on a <br />sea, ocean, or other navigable waterway, including all maritime-related activities, infrastructure, people, <br />cargo, and vessels and other conveyances.” Homeland Security Presidential Directive-13 (NSPD-41/HSPD- <br />13) (Maritime Security Policy, December 21, 2004). According to the National Plan to Achieve Maritime <br />Domain Awareness for the National Strategy for Maritime Security (Oct. 2005), “Maritime Domain