Was thinking about the various fireworks shows that Disney has displayed over the years and I was wondering (out of random curiosity) if anyone was "in the know" regarding their development, testing and costs?

ie; Back in the late 1980's early 90's I was backstage officially and (true or not) a dollar amount of approx $25,000 was thrown at me regarding the cost of each nights performance of "Fantasy in the Sky" back then. Anyone know the rough cost to put on the present day spectacular?

Who?
Who manufactures the shells for the show? In house? Outsourced?

Where?
Aside from FINAL show testing inside the park....where are these shows/shells usually tested during the development and planning stage?

Setup?
How long does it take to set up each day?

I saw the show control BUNKER back in the 90's.... is it still in use?