I think one there are two important questions to be answered in
the NTSB investigation:

1. Did ATC inform the Hawker about glider traffic?
2. Did the Hawker pilots look out the window?

Regards
-Gerhard
--
Gerhard Wesp / Holderenweg 2 / CH-8134 Adliswil
+41 (0)76 505 1149 (mobile) / +41 (0)44 668 1878 (office)
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http://gwesp.tx0.org/