If you receive a suspicious package or USB drive in the mail, here are some key steps to take:

1. Keep the package away from yourself and other people. Do not open it or shake it.
2. Report the arrival of the package to your local security or law enforcement agency.
3. Do not attempt to access the content of the package or USB drive.
4. Keep the package and any contents securely in a sealed container.
5. Follow the instructions of the security or law enforcement agency.