Living Expense Check Question

Hi everyone, I'm in my second month for digital marketing. I received a notice that my living expense check was mailed Friday the 13th. For anyone who has received a living expense check, who does Full Sail usually mail those checks with, USPS or FedEx? I just want to know so I can keep an I out. I don't know if I would need to sign like I did for the LaunchBox.

Thanks in advance!