Let’s follow the fireball as it travels through the building shall we?

Let’s follow the fireball as it travels through the building shall we? It begins at the roof, in an air vent where I’ve rigged a combination of heavy flammable gasses and hoses to force it in to the vents. I’ve had seven tanks pumping the gas into the system for the past ten minutes. Earlier I shut off the air conditioning. The worker bees have been sweltering for the past half hour and when I turn on the system again they’ll be so happy to have air that they’ll ignore the smell. Not that it matters, there’s so much of the shit waiting to hit the fan that they won’t have time to react.

Okay, he should be arriving back from lunch and sitting at his desk right now. Time to start the show. I dislodge the brick that’s preventing the main ventilation fan from turning and then shut off my hoses that go into the main air intake. I toss a match into the fan and then jump off the side of the building.

Gravity is pulling me down slightly faster than the gas is falling and burning through the building. I get to see the people see me and then get burnt alive. A few seconds later I see him. The moment only last hundredths of a second but my brain slows it all into slow motion.

He sees me. I see him. I flip him off. He burns to death.

I throw open my chute and fall safely down to the street below. Change is imminent now.