2 sliced the top from a plastic party popper, held the plastic-sheathed fuse at the top of the popper, and poured in a vial of gunpowder. He slid a cherry bomb into the bottom of the popper top and then attached it to the fishing thread. He checked the knots at both ends and then wrapped it with electrical tape. He cut an extra foot-long piece of thread and knotted one end to the longer string.