I have a couple play thru where these can be built on multiple planets via the planetary decisions. What triggers this and is it a bug? For 500 alloy and 500 component you can build a 13k strength fleet. Only downside is you can quickly wreck your economy with the upkeep if your not careful. FYI I have seen them being available on multiple Klingon worlds and on Betazed whilst occupied by the Cardassians. I have not seen the computer create any via decisions.