Heightened tensions in the region following a reported drone strike in Isfahan, Iran, could result in an increased threat to merchant vessels operating in the Persian Gulf, Strait of Hormuz, Gulf of Oman, Arabian Sea, Gulf of Aden, Bab al Mandeb Strait, and Red Sea. Exercise increased caution when transiting these areas. U.S. commercial vessels operating in these areas should review U.S. Maritime Advisory 2022-008 (Persian Gulf, Strait of Hormuz, Gulf of Oman, Arabian Sea, Gulf of Aden, Bab al Mandeb Strait, Red Sea, and Western Indian Ocean - Threats to Commercial Vessels) for amplifying information and points of contact. U.S. commercial vessels operating in these areas should also review MARSEC Directive 104-6 rev. 8 for guidance on security posture while operating in this area. MARSEC Directive 104-6 rev. 8 can be obtained through the vessel’s local Captain of the Port listed on the Certificate of Inspection. This alert will automatically expire on February 15, 2023. Any maritime industry questions regarding this alert should be directed to gmcc@uscg.mil. For more information about U.S. Maritime Alerts and Advisories, including subscription details, please visit http://www.marad.dot.gov/MSCI.