The Royal Guard in London are not to be messed with. They've got a job to do... and it's wise to respect their space. When a man took a family friend's son -- who has Down Syndrome -- to see them and get a picture, he wanted to make sure they didn't get too close. The young man was excited to see them, but also made sure to not get too close for a photo op. Then the precious moment in the video above happened that warmed our heart -- and left the young boy's escort in tears for the days to come.