Accidents - correlation and causation?

"Jose" wrote in message
.. .
there was an entire community wiped out in or near San Diego when a
jetliner crashed into a small plane, and then plummeted straight down. I
don't know if it was "thousands dead" but certainly hundreds, and iirc it
led to the TCA around San Diego.

Only seven people on the ground were killed:
http://amelia.db.erau.edu/reports/ntsb/aar/AAR79-05.pdf. (That's similar to
the number of people killed on the ground when AA 587 crashed into a
residential neighborhood in NY in November 2001.)

--Gary