The Skyspear Missile Launcher is a potent anti-aircraft weapon system deployed by the Hunter, the primary surface-to-air combat unit of the Adeptus Astartes. The Skyspear Missile Launcher fires pre-blessed savant warheads, each a Chapter relic in its own right, housing the entombed remains of a distinguished Chapter Serf. This Servitor's mummified brain augments the missile's auto-targeters, allowing it to second-guess enemy pilots or home in on the heretical radio wave emissions of their debased Machine Spirits (Artificial Intelligence). Against the dogged pursuit of a savant warhead and its macabre automated pilot, there can be little chance of escape, while the Hunter's servo-loaders maintain a steady rate of fire.
- Codex: Space Marines (6th Edition), pg. 121