On May 23, CDC and USAID facilitated a Congressional delegation visit to the National Institute of Hygiene and Epidemiology Emergency Operations Center (EOC) in Hanoi. Senator Tom Carper, and U.S. Representatives Beto O'Rourke and Joaquin Castro, who were traveling to Vietnam as guests of President Barack Obama, participated in a test run of the EOC, linking with the EOC at the Ministry of Health General Department of Preventive Medicine and the U.S. CDC in Atlanta in real-time. The visit demonstrated EOC’s capacity to track and analyze surveillance data and share information to respond appropriately to disease outbreaks. The U.S. delegation engaged in discussion on global health security threats as well as the importance of resources, training, and national capacity-building in an interconnected world.