[lonevoice]

The hat pictured in the article you linked is definitely a cowboy hat. However, I believe the hat he was wearing today was a US Parks Service hat, like this:

When some pictures come out showing him at today's memorial, we can confirm. If I'm wrong, oh well.

[kempster]

http://pittsburgh.cbslocal.com/video/6240713-secretary-of-interior-ken-salazar-speaks-at-flight-93-memorial/

Here is the speech from Salazar. His hat does not look like your Park Hat to me. Comes on right after the Roto Rooter Commercial of ten seconds.