But they had EVERY reason to believe he was SOMEWHERE out there - in a neghborhood he was unfamilar with. I'm sorry, but if my 17 year old was visiting in that situation I would at least drive around the neighbor hood looking for him, and sure as heck, if there was a commotion a mere 70 yards from my house I would have at least checked it out.
By the way, the people on the 911 tapes wouldn't go out of their house PRIOR to police arriving; it was during the process of the 911 calls they wouldn't go outside. Watch what little video (I am trying to find links from
http://www.cfnews13.com/ now but have to run out)) there is of the scene that night and there are some views of civilians standing around police cars and IIRC crime scene tape.