"Major fires have broken out at the World Trade Center and Carmen Heavy Industries, causing extensive glass panel breakage. The cause of the fire is currently under investigation. As the clean-up is still ongoing, nearby residents are advised to be cautious. The incidents are suspected to be cases of arson, and whether the two are linked is also under investigation. Vehicles are advised to divert to avoid blocking emergency routes," an emergency news broadcast blared from a portable radio.
Meanwhile, a low-frequency electrical hum was detected. Unless one paid close attention, it would be mistaken as a poor signal static.
This was a secret signal used by the magical organization to covertly notify other wizards through the news.
This was also one of the primary methods the organization uses to contact other wizards.
This technique was even more effective than magic. With its high level of secrecy, wizards could receive information unknown to outsiders while watching the news.