The Motion Blur of Bottle Rockets

I was told that I needed to do motion blur; and, I did not just want to do the usual light motion. As I was playing around with some shots, it hit me. What would motion blur-ing a bottle rocket look like? So I did just that. Enjoy!

Etna
F-Stop: F-4, Shutter Speed: 15 sec

Vesuvius
F-Stop: F-4.1, Shutter Speed: 15 sec

Loa
F-Stop: F-3.1, Shutter Speed: 15 Sec

Rainier
F-Stop: F-8, Shutter Speed: 15 Sec

Sakurajima
F-Stop: F-8, Shutter Speed 15 Sec

Aso-san
F-Stop: 3.5, Shutter Speed: 15 sec

Bromo
F-Stop: 4.1, Shutter Speed 15 sec

Krakatau
F-Stop: 3.5, Shutter Speed 15 sec

St. Helen
F-Stop: F-6.3, Shutter Speed: 15 sec

Damavand
F-Stop: F-6.3, Shutter Speed: 15 sec