A silvery canister bumped against Sarah’s hoof. She blinked, scooping it up with one hoof and turning it around. There were symbols on the reverse side, a looping circular script that she found she could read as easily as English. “Liquid Hydrogen—propulsion grade.” She set it down on the table, pushing it well away from her. “Nice trick keeping it liquid in there. I hope you’re not making a bomb.”