Tony Stark's Face Turned Green

Washington's sky was clear and bright, with few white clouds. The sunlight brought a touch of warmth to the cold, dry winter.

Against the deep blue sky, a flying arc streaked through with a sonic boom trail. A sonic boom skirt formed below its waist as it curved in from beyond the horizon.

It was Zero Gravity II, an armor equipped with the Gravitational Magnetic Levitation System Tony Stark had improved and built. It fit closer to the body than the first model and possessed a sci-fi aesthetic distinct from He-El's. Its interwoven gold, red, and white paint gleamed fiercely under the sunlight, carrying an icy yet bold and powerful sense of intimidation.

"Sir, the newly installed Biological Mind Detector has detected one hundred and two biological mind signatures in the sky," JARVIS suddenly reminded Tony Stark.

"Looks like its practical application is sound. Is it a passing passenger aircraft?" Tony Stark was quite pleased with the newly developed Biological Mind Detector.

This thing would make a major contribution to finding Loki's weakness.

"No. There are no passenger aircraft within five kilometers. The radar has detected no targets. These one hundred and three biological mind signatures are highly likely to be inside a spacecraft concealed from radar detection." As JARVIS spoke, he projected the surrounding expanse of blue sky and white clouds into Tony Stark's vision.

The principle behind radar detection was simple: transmission, reception, and signal processing.

First, radar emitted a beam of electromagnetic waves. These waves traveled through the air, and upon encountering a target, part of the waves would be absorbed while another part would be reflected back.

Next, the radar received the reflected signals and converted them into electrical signals.

Finally, the radar processed the received signals, determining information such as the target's distance, rate of