Mine uses the LEGO magnet system to lock the transport pods in place on the ship. Also of note in this build is a mechanism that I built to allow the forward winglets to change positions with a toggle handle built into the rear of the ship. The upper cockpit also separates and becomes it own mini-ship. The YouTube video gives a tour of the whole and the different features.
I began by searching for bricks through one of my many bulk brick tubs. I segregated some blue, black and trans-red bricks to mimic the primary colors of this subtheme. As I often do with my builds, especially those inspired by a theme or color palette, I arrayed out the bricks that I had gathered and began the build. I find that laying out the pieces and seeing how many different pieces that I have and which ones I have pairs or more of really helps. Of course, I also have many other segregated pieces in various bins. The ones that I lay out are usually the specialty pieces like less common slopes, windshields, windows, round pieces, interesting pieces for greeblies or other features, etc. Basically anything in the color palette that catches my eye as I sort through bulk bins. You can see the selection below. I engineered what I think will be a nifty little mechanism for this build. I will plan to reveal it on the PittBrickyard YouTube channel in a few more days when it is done.