The 2010 disappearance was one of several high - profile cases . Etan ##g 's name was posted on milk cartons . Missing by strangers are rare ; runaways are much more numerous . Parents use the AMBER alert system when children go missing .
The Patz disappearance was one of several high-profile cases . Etan Patz 's photo was posted on milk cartons . Abductions by strangers are rare ; runaways are much more numerous . Authorities use the AMBER alert system when children go missing .