Here's the completed Diorama; Brother Omnio reports mutliple contacts on his auspex, Brother Zael stands ready to purge the adjacent compartment with cleansing flames as Brother Noctis prepares to activate the door. Sergeant Gideon and Brother Deino stand ready to deal with anything that comes through the door.
A few more shots after the break
The construction article can be found here
This was a lot of fun to build and what's more it's a winner -- It won the contest at my FLGS!