bunker buster defense

“A-a bunker cluster!?”
“Oh, you’re familiar with them? They are special warheads developed to destroy military
shelters. They scatter around two hundred smaller bombs in the air, so I would have
been taking out my own forces if I had fired this while the Griffin Skies were still here.”
As Carissa held Curtana Original in one hand and the radio connected to the destroyer
in her left, her most villainous smile yet spread across her face.
“I was planning on firing this after creating a bit more of a sense of danger that brought
my mother here, but the Griffin Skies were defeated ahead of schedule. I have no choice
but to move the schedule up a bit.”
“Shit!! That warhead will blow away an area with a radius of three kilometers in every
direction!! Buckingham Palace isn’t going to be the only place hit. One shot will be
enough to do serious damage to London!!”
“You can shout all you want, but a cruise missile is quite fast. With the Concorde and the
Eurofighter, France and other EU countries have been demanding quite a bit of money
for development, but that has strengthened this country’s supersonic technology. I
believe the obsession with the shape of the cruise missile’s stowable wings have brought
them to the level of being at or near Mach 5 at low altitude. It won’t even take one
minute to travel the a hundred kilometers.”
“Dammit!!”

Three kilometers in sixty seconds. That wasn’t a distance human legs could take
someone. That may be different for a Saint like Kanzaki, but most of the Anglicans there
would not make it in time.
“I won’t let you do that,” said Kanzaki Kaori cutting off Kamijou’s thoughts.
She checked over the wires in her hand.
“I will set up a defense barrier in the air to intercept them. A range of three kilometers in
every direction and about two hundred smaller explosives spreading out...That is not an
impossible scale to deal with!!”
“It’s true that you may be able to deal with a bunker cluster using magic.”
Carissa smiled. She was surely only standing there because she was confident she could
escape the blast unscathed using Curtana Original’s power.
She pointed up into the night sky with the hand holding the radio.
There was an artificial point of light there that was clearly not a star.
“But you don’t have time for that kind of preparation.”
“!!”
Kanzaki strung the seven wires up into the night sky as if the repel Carissa’s words. The
wires formed a three-dimensional magic circle and bluish white light ran across them
creating a thick wall covering up an entire city block.
That was the special magic of a Saint that was an order of magnitude greater than
normal magic.

- Toaru Majutsu no Index Volume 18, Chapter 7 Part 5