Pretty much your bog-standard recon marines, with an Alpha Legion upgrade head for the sergeant. Nothing to write home about and not necessarily the best choice on an effectiveness-to-points ratio, but rather fluffy to have, as the unit is explicitly mentioned in the book!
Next up are the Headhunters, the second of the Alpha Legion's special units (alongside the Lernaeans). With banestrike rounds and Preferred Enemy (Infantry), they're really designed to gun down their fellow marines, and they can take a heavy bolter with a suspenson web for a little extra dakka. Wanted to bling them up a bit more than the basic marines, so they all got the Alpha Legion upgrade heads, and I added a scope to each of the bolters to help 'em stand out as having some specialist equipment.
Last but not least, I banged together the two characters from the box set. The terminator will be used to represent Sheed Ranko, the ostensible leader of the force. No real plans to field the chaplain at the moment, and I'm thinking I may clip the crozius off of him and replace it with some alternate weapon - perhaps another pistol and make him into a Moritat, or a paragon blade for use as a power-armoured Praetor.
It was nice enough out yesterday to get some models primered, so with the upcoming Thanksgiving holiday weekend I'm hoping to get some paint on some of 'em!