"What kind of airplane is that!"
"What did it drop!"
"We strongly request to watch them up close!"
The military observers were bustling outside the runway, hoping to get closer to the runway to observe the parked airplanes.
With their keen senses, they knew that these airplanes would once again push the already cutting-edge aviation technology to new heights.
In fact, the world's research on airplanes wasn't sudden, much like submarines.
Before submarines could be used in warfare, countries had already researched them, and the technology for engineering and operational submarines was very mature.
They could perform various tasks in complex underwater environments, but no one had ever thought of using them in the military field.
Individual researchers didn't have the money to build a full-fledged submarine or multiple submarines to complete this research.
