Someone mentioned in another thread that at least one of the girls' SM accounts was publicly viewable. If, for instance one or the other's FB/Twitter/SC, etc was viewable by anyone, if this WAS a planned, targeted killing, it would have likely been easy for a predator to find out where the girls went most frequently, and it sounds like the bridge was a favorite spot, at least for Liberty.This may be why LE made the comments about being aware of what our kids are doing. They had likely already viewed the girls' SM accounts, and if indeed, they were set to be publicly viewed by anyone, that would raise a lot of concern, and make the suspect pool that much bigger. We all need to make sure our kids are practicing safe habits online.I know that the BSA, for one, has made basic internet safety one of the merit pins for Cubs, and I hope schools(and parents) are doing the same.