I agree it is nice to have a printed copy and when traveling and I carry both printed and pictures in my phone when going to the BVI. However, on the trip back, we don't have assess to a printers so we rely on phones. We also carry battery chargers so we can always give a phone a charge if needed. AND I've dealt with the national guard 4 times in the last 12 weeks in St Thomas and they have always been both friendly and helpful