It depends. Have you met them in real life before? if not, maybe plan to have a letter sent to them or an email, or give someone instructions to message them if you pass. Plus, if you don't, you'd had worried them for nothing. If you do know them in person, you can mention them in a letter. I know things may be fucked right now, but... I hope you stay for a little longer. If not, I only wish you peace in what you do <3