Mastodawn

Antimatter has been transported for the first time

Physicists have succeeded for the first time in transporting the most expensive and most volatile substance on Earth — antimatter.

If containment was to fail, it the total energy released would have been approximately 2.766 * 10 ^ -8 J, so it wasn't particularly dangerous

What is that in firecrackers?

Gemini says a firecracker releases 150 J, so yeah not a lot.

It's a fraction of the energy released when an unlit fire cracker is dropped an inch. Basically unmeasurable