Gray Tech (rendered as Grey Tech in Resistance: Burning Skies) is the term that SRPA researchers have given to advanced, technological objects that have been recovered from Chimeran towers. Gray Tech is a material created by a yet unknown species, whom were believed to have driven the Chimera from Earth long before humanity's existence. The nature of the technology is not fully explained but desired by both humans and Chimera for its capabilities of creating or augmenting powerful weaponry.