None of the other investigators have arrived, but a small package lies at your table, with a note atop it. [i]Take one each, and only use if needed. Pull out the pin, and then press the button. -A fellow Walker.[/i] Inside are small, green folded metal cubes with a pin sticking out of one side, along with a button on the top. They are strangely heavy. You slide one into your coat pocket and leave the rest.