The 54th Psian Jackals are a Militarium Tempestus unit that specializes in hunting Tyranids. I am adding them to my knights as artillery support and a little air cavalry. They will make an appearance at Summer Slaughter in August. Here they are ready for primer.
17th air cav. Team group Shot
Demo specialist Greko
These are the new millitarum Tempestus models with Max Mini "Space Police" heads. I have an idea bouncing in my head for an Adeptus Arbites army. These should fit in nicely.