fake bomb

“When I came through the gate,” he said, “a woman came on through the helmet. I’m not sure if she was pre-recorded or speaking to me live. She told me I’d just engaged a pressure trigger connected to five hundred grams of C4, which had been packed inside the helmet lining. If I take it off too soon, it’ll vaporize everything in a twenty foot radius.”

I thought about that.

...

“How did you know there wasn’t really a bomb in the helmet?” she asked.

“Lucky guess,” I said. Kiira looked aghast.

I finished chewing, then said, “Half a kilogram of C4 has a blast radius of over a hundred metres, not twenty feet.”

“So it’s more dangerous than he said?” said Kiira, screwing up her face. I nodded. “And that convinced you?” she said.

“It told me whoever was talking through the helmet was full of shit.”
-Sledge vs. The Labyrinth, pg. 190-194