While we were in Belize near Xuantunich, we saw a military officer and a police officer. As we talked with them we learned that it is common for people to come over from Guatemala since it is only 2 miles away and steal from tourists. In one sense I am glad that they were there to protect us. I've definitely watched enough movies to know that if someone really wanted to cause trouble two guys with guns would not stop them.
When I asked if I could take their picture they said that they were told not to let people take their picture, but they didn't see the harm.