On August 21, 2026, the William J. Perry Center for Hemispheric Defense Studies concluded the in-residence phase of its Countering Hybrid Threats in the Americas (CHTA) and Homeland Defense and Border Security (HDBS) courses in Washington, D.C.

Over the course of two weeks, participants engaged with a range of security challenges affecting the Western Hemisphere and examined how governments and institutions can respond through coordinated, multidimensional approaches.

The CHTA course, led by Professors Celina Realuyo and Dr. Boris Saavedra, examined the evolving nature of hybrid threats in the region, including the convergence of transnational criminal networks, terrorism, cyber actors, and external state influence. Through discussions, applied analysis, and a tour of the DEA Museum, participants explored the complex and evolving security environment and considered policy options and strategies for addressing threats that cross traditional security boundaries.

The HDBS course, led by Professor of Practice Jeffrey Zinsmeister, examined the strategic and policy considerations shaping homeland defense and border security. Discussions addressed regional cooperation, governance, and the connections between security, economic conditions, and migration. As part of the course, participants visited the National Museum of the Marine Corps in Quantico, Virginia, and toured Audi Field in Washington, D.C., for an overview of how the stadium and DC United approach event security.

The two courses provided a forum for civilian and military professionals from across the hemisphere to share national and regional perspectives, engage with complex policy questions, and develop professional relationships.