In the reading WAY too far into things department, I like the use of those two ‘control room’ shots in the firing sequence for what it telegraphs:
Now, in the ‘weapon charging’ scene, it goes from a propaganda speech to the brainwashed masses to seemingly two or three people overlooking… something, and pushing the buttons to begin the process.
Then, when we get to the actual weapon firing, we get some people scrambling to comply with orders, one of which looks somewhat uncomfortable with it.