With the on-going issues regarding overtime flights and the related cancellations, I'd like to convert my next set of e-tickets to paper. Can I just call UAL and ask for those to be mailed or do I need to go to a ticket counter? I assume this can be done or once issued, am I stuck with e-tickets.

Let me say that I have had zero problems with electronic ticketing but I have a number of connections coming up in small airports while flying with my family and I'd rather head off any potential problems.

Thanks