(I'm going to side-step the question for a moment and target my current WIP)
I started chapters 1 & 2 at night. Then I ended the 2-chapter battle and switched to regular state. For regular state (Meeting the horse, going on picnics, being happy, etc) I've been trying to focus the characters on sunshine and blue skies. As the time of Armageddon approaches, I've been increasing the cloudiness. Focusing on the greys. Nova's eyes are no longer "blue" - they're steely. Once the hammer falls, I plan to go back to darkness.
(jumping tracks again)
Star Trek TNG really worked their sounds on the bridge. There was the normal bridge sounds. Then, they'd be approaching an area where they think there are hostiles. The computers would make this double beep on like a 10-second pulse. Even though the characters were talking about misc things there's this meep-meep (pause) meep-meep (pause) in the background.
Then suddenly you'd have a weedle-weedle sound and shortly after "Captain, sensors detect incoming ships"
(ok back on topic)
Apollo is standing on the Ark of the Covenant discussing. [Just then] the Captain turned and said "Incoming ship"...
Of course, it isn't really "just then". He probably saw the captain take a call while he was talking. Maybe he heard sensors beeping with important messages or saw a crewman waiting to speak.
Here's an attempt:
Maybe you haven’t been paying attention, Apollo said over the buzz of incoming messages. He nodded to the captain to handle the call and continued. Caligula holds all the cards.
O, ye of little faith.
Apollo closed his eyes, sighed deeply, and stilled a tremor. O, ye of too many quotes.
"Sir?" the Ark’s captain, Amethyst Benjamin, turned to Prince Alexander and Admiral Highlander. “We’re receiving a signal from your sons aboard a transport that just arrived from Earth. They’re requesting permission to dock.”
Really it depends on how "sudden" you want the events. The one scene where they're in the palace and the bombers break past security I think you was very sudden. These scene, sudden doesn't seem required.
Also, I'm partial to colours and sounds. Having consoles flash in red or having patterns of reflected light on the ceiling is neat & re-usable. It can also be discarded when not needed.
Just some ideas