Memorial Day Heist Plan

They were about fifty centimetres thick and filled with steel — reinforced concrete.

When the gang studied them closely, they realized drilling would not work. Drilling through

that much reinforced concrete would take many days — and they could not work in one place for

so long without being noticed. So they decided to stop thinking about drills and

use dynamite — a powerful blast that would give them a direct route inside. But this brought

a new problem. If the explosion was heard outside, people would be alerted.

Other police or residents would rush over. Their next worry was how to “cover”

the sound of the blast so no one would hear it. They came up with a clever idea —