any way in these books he describes a federation faction that was created shortly after he crossed in to the mirror universe and how no one in the federation knows abut the existens of this faction this secrecy has given it an almost free rain over the safety of the federation from attempts by the mirror universe counterpart's to infiltrate key positions in star fleet and the federation. in this respect they have a more free rain as to what technology's to implement in their fleets. and in thees books he describes very remarkable ships. if I remember correctly he describes them in the fallowing manner. the ships hull was smooth with no indication of any sort of bulk heads or any other sines of molecular bonding it flowed like a unanimous form and had a reflective properties to it