Speaking of nuns.... When my son was in college, my (then) husband, son and I were flying to CA for vacation and to visit family. Two of us got moved up to first class seating so my son said "You two go ahead. I'll stay back here". We both knew my son's sense of humor and thought "Ruh roh!" but we decided to go ahead w/it. My son was seated next to a nun and we'd both look back periodically and all was well. My son was wearing his ear buds and crazy sun glasses and he was mercifully leaving the nun alone. A little while later when I looked back again, the nun was wearing the far out sun glasses and his ear buds and she was rockin' to the music, head bobbing up and down! My son cracked jokes for the rest of the flight and the nun just loved him and she wasn't that young either. So don't judge someone by their garb, Monica, or even their facial expression. As Catty1 said, they could've been just coming back from comforting someone or maybe they had just heard of a tragedy. We just never know.