From my Research, it appears that the Drones are there to Protect the Various Cities from Radiation, Radioactive Contamination, and Nuclear threats, by using HPGe Detectors!

"Since HPGe detectors produce the highest resolution commonly available today, they are used to measure radiation in a variety of applications, including personnel and environmental monitoring for radioactive contamination, medical applications, radiometric assay, nuclear security, and nuclear plant safety."
https://www.nuclear-power.com/nuclear-engineering/radiation-detection/semiconductor-detectors/high-purity-germanium-detectors-hpge/

From Azazel News on Telegram

"The Drones flying around New Jersey, New York, California, Pacific Northwest, Texas etc….
are High-Purity Germanium (HPGe) detector Drones"

"Some built by Teledyne.
Some built by Department of Energy.
Some built by Anduril Industries."

"To give you an idea of why they are flying around and what they are trying to find ☢️☢️"

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