Trying to remember a bit more of it, but wasn’t the usb stick a rubber ducky? I mean it could possibly trigger some alarms, but to note that I don’t think it would register as a flash drive. In short you can program them and make them appear to the computer however you want. (IE it could appear as a keyboard, and rather than copying a file from storage, and rather than copying a script off of itself, it could say open cmd or powershell and effectively run the commands itself (as if they are being typed really fast, rather than actually a script). Companies typically don’t log keyboards being plugged in.