The US Department of Defense (Pentagon) has been testing a sophisticated device, obtained over a year ago through an undercover operation, which some investigators believe could be connected to the mysterious "Havana Syndrome" — officially termed Anomalous Health Incidents (AHIs). This covert acquisition, reportedly costing an "eight-figure" sum (tens of millions of dollars) and executed by Homeland Security Investigations (HSI) with Pentagon funding during the final months of the Biden administration, has reignited intense debate within the US government. The device is described as emitting pulsed radio waves, a mechanism long theorized by some officials and academics as a potential cause for the debilitating neurological symptoms reported by US diplomats, intelligence officers, and military personnel worldwide since late 2016. Although not entirely Russian in origin, the device does contain Russian-made components and is reportedly portable enough to fit into a backpack, raising concerns about potential proliferation. Despite extensive testing, US officials emphasize that there is currently no definitive conclusion linking this specific device to the Havana Syndrome incidents, and skepticism persists within various government agencies. The ongoing study of this device represents a significant development in the long-running effort to understand the cause of these unexplained health afflictions.