brian mohr takes a look. >> pilgrims and tourists from around the world welcomed christmas in bethlehemical birth place of jesus. at the vatican, pope francis offered a prayer of peace. high above on the international space station, a similar viewpoint from the crew of expedition 50. >> seeing the planet as a whole, and it actually re-enforces, i think, that the fact that we should live as one people and strive for peace. >> on the ground in iraq, american troops did their best to enjoy a peaceful holiday away from home. >> kind of a struggle. you know, but i have a good support back home. and it isn't too bad. we have a pretty good family here. >> but some took time out to share the holiday spirit with those less fortunate. at places like this shelter in indiana, and this rescue mission in charlotte. >> this makes us really feel what christmas is all about. >> 500 homeless people from the dallas area were given a gift they'll not soon forget. not just a meal but a room at the omni hotel, which teamed up with the local soup kitchen. >> wow, this is the greatest experience of my life. i