When this timer hits zero,
I'm going to hit this big red button, and set off that fireworks display
with just one minor change of plan.
Those 10 minutes of fireworks are going to get set off in 10 seconds.
- Today we're firing mainly an aerial show.
So that'll be shells fired out of the tubes that you can see behind us.
They're launched up to height,
throwing stars out ranging from 60 to 120 metres.
You've then got ground-level effects which are mines,
pretty much shells but without the lifting charge.
And then, finally, there are a couple of slices that will throw out width.
- From a design point of view, traditionally,
most of the shows we do are synchronised to music.
Normally in a 10 minute track, we could have anywhere up to 1,000 cues,
and each and every cue has to be assigned a firework.
And then it's a case of physically wiring in every single igniter.
We tend to use an igniter for every firework
so we have a high degree of control over the show.
And then we run the fire file and stand back and wait
for the computer to fire all of the 1,000 cues or so.
What we're intentionally doing today is shifting the time,
and rather than firing a 10 minute sequence,
we're going to fire all of the cues within a hundredth of a second.
So that effectively, everything will lift almost instantaneously together.
- There are plenty of stories and videos of fireworks display companies
that have made that same change by accident.
Or, they've hit the test button with everything live.
Or, they've zeroed out the timings with what one company called
"an unintentional additional procedural step."
Which, in the media, is called a technical hitch.
Or, worse, human error.
And the investigation ends there.
Someone hit the wrong button, that explains it,
we don't need to look any further.
But I think that's wrong.
And a lot of other people think so, too.
- As you go through, firstly, the testing procedure,
then the checking procedure and arming procedure,
the computer will prompt questions,
asking if the safety area is clear, if people are close.
- What the computer does is send a very low voltage
down the line to make sure and test for continuities.
And we know in advance, without actually firing anything,
that all the circuits are complete,
and that we know it's all gonna fire as planned.
We then run through various other test procedures
to make sure that there's comms with the modules,
and the firing panel.
The final one is a firepower test, just to make sure that the
capacitor in each of the modules is fully working and charging.
We have to make sure that we think up as many scenarios
that can possibly go wrong, that will cause us problems,
and it's all about mitigating against that.
- If it's possible for a human to hit the wrong button,
and set off an entire fireworks display by accident,
then maybe the problem isn't with the human.
It's with that button.
If it's possible to mix up minutes and fractions of a second
like we've done deliberately,
then maybe the system isn't clear.
Or, maybe the prelaunch checklist isn't thorough enough.
This isn't just about fireworks, it's about anything
that is somehow one human error away from disaster.
People make mistakes, and all our systems need to be
designed to be ready for it.
That's why this button doesn't actually do anything.
The professionals over there are the ones actually doing the firing.
Take it away!
- Five, four, three, two, one...
- Oh, my God.
- One, fire.
- Oh, my God.
- Did it fire(?)
- Now I see why they take longer than that.