If they're not with me, they're with another adult. My husband works from home and when I'm at work, they've got two nannies, even when he's there. They do not walk to or from anyone's house alone, we drive them to school and the nanny picks them up if we can't. They don't go to the mall or to the movies alone and I attend every school function, after school function and fiield trip. If they spend the night at another child's home, I make sure that there are no firearms, dogs, or anything else that makes me nervous, including older brothers who may have been in trouble with the law. If they're in my backyard swimming, an adult is with them and we've got a 9 foot privacy fence that you can't even see through. And they both have GPS devices in their cell phones. I've taken just about every precaution I can think of, but if you think of any I've missed, I'd be happy to hear it!