"Bye Bye Bye" (and, subsequently, "Hello!") Deployable Cooling Systems

I know its (supposed to be) random, but of course this GC, first 3 disk nodes and no deployable cooling systems. Last GC (cancelled one) I had one in each of my first 3 nodes...I was nervous to take all three last time because wasn't sure if they stacked (apparently they do, per the boards). Que Sera, Sera