Why were there helicopters circling overhead?

There was some police activity along with several helicopters circling overhead the other night.  All the talking over the megaphone and the noise from the helicopters were driving our dog nuts and he was barking out of control.  We were wondering what it was all about.  We live in Tarzana.  So I did a search.  In the Google news tab I typed


Helicopters Tarzana

The results showed that a couple of hikers had been missing, but they had been found.  Read the good news here:

http://www.dailynews.com/news/ci_20003126