And then there was that signature. The signature was not that of Passfeld. And what mattered most, was that it was made of the original Luminous steel- the very same alloy that made the original Desert Trawler. Luminous steel was never used to make these machines- except once. And that once was in the original Desert Trawler. Technology rapidly progressed after the first Trawler prototype, and Passfeld had the academy's complete support to build the Trawlers. They made the next design with Bright Steel- far stronger, far more flexible, far easier to produce and far, far more durable.