(TLP:CLEAR) Supplemental General Security & Resilience Highlights – September 18, 2025

The following posts are useful for general awareness of current physical security threats, natural disaster resilience, preparedness resources, mitigation guidance, and other security-related news or updates. These resources have been curated by the WaterISAC analyst team as items of broad relevance and benefit that do not need supplemental analysis at this time.

Natural Hazards/Climate Change

• Final days of summer 2025 to bring heat and expanding drought in eastern, central US – AccuWeather
• California Flood Watch: Map Shows Areas Under Threat – Newsweek
• The Atlantic’s remarkable 20-day quiet period finally ends – Yale Climate Connections
• Will there be any hurricane landfall threats in the US this month? – AccuWeather
• Megadroughts Are Here To Stay, And U.S. Water Utilities Need To Adapt – Water Online
• August 2025: Earth’s 3rd-hottest August on record – Yale Climate Connections
• The Past Three Summers Were the Three Hottest on Record – Scientific American

Operational Resilience

• Hurricane Katrina: 3 painful lessons for emergency management are increasingly important 20 years later – Conversation
• 900 MHz Band Change Would Cause Public Safety Risks, Communications Disruption, Research Argues – Homeland Security Today
• Turning Resistance into Readiness with Change Management – Security Management Magazine
• Climate change is causing ever more disruption. Can Australia’s new adaptation plan help? – Conversation
• AI’s Potential as a Natural Disaster Preparedness Tool – Security Management Magazine
• Civil Defense: The Unseen Pillars of Preparedness – Domestic Preparedness
• Suspected arson attack in Berlin leaves 50,000 homes without power – Reuters
• Undersea cables cut in the Red Sea, disrupting internet access in Asia and the Mideast – AP

Extremism/Terrorism

• Columbia Man Pleads Guilty to Attempting to Use a Weapon of Mass Destruction and to Destroy an Energy Facility in Nashville – DOJ
• Twenty-Four Years After 9/11, What is the State of the Global Terrorism? – Soufan Center
• A Nation Divided: What the Charlie Kirk Shooting Reveals About America – Soufan Center
• Evergreen High School Shooter’s Online Activity Reveals Fascination with Mass Shootings, White Supremacy – ADL
• Police seize 23 guns from home of 13-year-old who appeared to idolize mass shooters – Police 1
• Utah man arrested for threat of terrorism after explosive device found underneath news media vehicle – ABC 4
• Alberta man was ISIS propagandist, police say – Global News (Canada)