Watch how the Saffire experiment will be conducted in space.

NASA Glenn is leading an experiment that seeks to understand how fire spreads in a microgravity environment. Saffire I, II, and III will launch separately in 2016 aboard resupply missions to the ISS. But they will not be unloaded and after the Orbital/ATK Cygnus pulls far away from the space station, the experiments will begin. This animation explains how it all works.