A formidable gunship, the Storm Eagle mounts fearsome firepower for a vehicle of its size and is capable of transporting twenty Space Marines directly into the thick of an assault. The exact provenance of the Storm Eagle is unknown, but it bears clear similarities to the Stormravens employed by the Blood Angels and Grey Knights. Certain sources place the principal manufacture of the Storm Eagle upon Tigrus and Anvilus IX, both primary-grade Forge Worlds that suffered catastrophic damage during the Horus Heresy. In recent decades the number of Storm Eagles in active service has begun to increase, especially amongst those Chapters known to have favourable relations with the Adeptus Mechanicus. This has lead some observers to believe that production has been restored at an as yet unknown location.