Following in 5 September 2005 AW&ST.

Quote

Two U.S. Air Force Thunderbird F-16s made contact during a
performance at Chicago Air and Water Show on Aug 21, prompting the
team's immediate landing. The #3 (right wing) and #4 (slot) aircraft
touched during the Diamond formation's pass-in-review, causing part of
a wingtip missile rail to break off one fighter (slot). There were no
injuries or significant damage. The contact was so minor that pilots
initially attributed the bump to turbulence. Practice flights were
resumed on Aug 23.

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Big John