http://www.youtube.com/watch?v=lfg0_FbIqqw
How does Kirk get that sound on the last note of the solo (at 5:53 ish) I would link it to that part of the song, but I just don't know how.
I think it's a natural harmonic with a whammy dive.
Look up natural harmonics if you don't know about them. Basically, there are several spots on the fretboard where you can produce them.
You make one by slightly touching the string directly over the fret itself. At the same moment you pick the string you remove your finger from it.
You do not push the string into the fret
Yes, your finger is actually above the fret instead of in between like usual.
I'm too lazy to pick my guitar up right now and havn't played with these for some time.. but I believe there to be one above the 12th fret on the high e string. (or somewhere nearby)
Edit: Yeah, it sounds like there are actually 2 notes playing at once (like Eli pointed out). Probably an open string and the natural harmonic together while being whammy dived.