My children attend a local Karate school where the 'teacher' is a big proponent of repeated stranger danger instruction. A portion of all preschool classes (each class period) as well as often in the older classes is devoted to stranger danger. He also gives free 'seminars' for groups about it. One of the things he teaches is if your child can recognize an employee to get help from, a stranger can easily look like that employee. At a seminar for scouts, he asked the children (5-8) how they know who is an employee at walmart....the children all answered they were a blue walmart shirt (think smock). Same with Target...they all said they wear red. That is very easy to copy. So would looking like a CM or whatever other store. He teaches the age old STAY PUT. Mom will find you if you stand still. Another thing I heard another mom praising him for teaching her child: A couple of moms went to the local amusement park with a group of children and one got separated. Not only did he stay put but he asked a "mom with children" to get him some help. The idea behind a "mom with children" is they are the most likely to help and the least likely to hurt. He also Talked to us about in our area there hasnt actually been a stranger abduction of a child in I dont know how many years he said but it was quite a while. So while we focus on the stranger danger an awful lot...