On October 10, 2023, near Calabasas Peak, pulsating blue light, observed a silent, disc-shaped object with a pulsating blue light

Weather Conditions: Clear skies with good visibility, no cloud cover, and a new moon.
Description of the Object: The object was disc-shaped with a diameter of roughly 30 feet. It had a metallic surface with a silver hue and emitted a pulsating blue light from its underside. It made no sound, and it didn't have any visible propellers, wings, or engines.
Trajectory and Speed: The object was first noticed hovering about 300 feet above the ground. It then moved in a nonlinear pattern, making sharp turns and changing speeds abruptly. It accelerated rapidly and disappeared from view within approximately 30 seconds.
Duration of the Sighting: Approximately 1 minute.
Witnesses: The event was observed by four of my friends, who were camping in a rural area.
Physical Effects: No immediate physical effects were reported. However, both witnesses experienced a feeling of unease and mild headaches following the sighting.