This course examines the relatively new discipline of homeland security, that emerged in 2001 following the 9/11 attacks. Due to its post-9/11 founding, homeland security is often mistakenly assumed to be focused solely on counterterrorism efforts. This could not be further from the truth. Homeland security - both the broad national homeland security enterprise and the Department of Homeland Security (DHS) - focus on many tasks associated with securing the United States, its populace, its infrastructure and its economy from various kinds of malicious actors, and from some catastrophic level natural hazards as well. Transnational criminal organizations, terrorists, cyber-attackers, human traffickers, and those that would damage or manipulate infrastructure like electrical grids and financial markets, are among the many threat actors that occupy homeland security professionals. Ultimately, the homeland security enterprise is about understanding and regulating the flows of goods, people, organizations, and even bits and bytes (like malicious computer code) into and out of the US homeland. Students who have earned credit for Ehc/Emh 461 cannot receive credit for Emh 561.