I went from yesterday's 'I finally got started' to shots of the fireworks in pretty short order. What can I say? Fireworks are awesome. The best effects were the cascades of sparklers off the deck of the Golden Gate bridge, and the double-tower simultaneous explosions.
You can just see the south tower and span of 'international orange' in the bottom photo.
I decided to start with a simple collage of a few of the shots taken by Mr AC. The cool daisy-like shapes are done with the CS5 dynamic azalea brush.