Answer :
Final answer:
The 616 OC uses a smartwatch with the Cyber Heads-Up Display for situational awareness, which is a wearable computer device known for its surveillance abilities in military operations.
Explanation:
The agile combat support tool the 616 OC uses with the Cyber Heads-Up Display to provide situational awareness is a. the smartwatch. This technology is a part of the broader category of wearable computer devices that includes augmented reality goggles and fitness trackers.
The major benefit of such devices, particularly in the military context, is their surveillance abilities. Smart dust is another groundbreaking technology that has been conceptualized under DARPA for military uses such as battlefield surveillance, treaty monitoring, and more. Both smartwatches and smart dust represent the military's increasing use of innovative technology to enhance operational capabilities.
