What is Pyrotechnics ?
Pyrotechnics is (noun) the art of making fireworks They called in a pyrotechnics expert to set up the display. (plural noun) 1. a firework display The pyrotechnics lit up the night sky. 2. an occasion such as a performance in which someone shows a lot of skill a piece of music notable for the pyrotechnics demanded from the percussion section She is capable of amazing vocal pyrotechnics when reciting Shakespeare.
source: Easier English, Student Dictionary Upper Intermediate Level