From one target to an array
Real carbine problems present several targets at once, and how you sequence and manage the engagement determines whether you're fast and effective or slow and sloppy. This builds directly on transitions: now you're stringing transitions together across an array, with the added problems of deciding the order, confirming each hit, and never losing track of your ammunition or which targets remain.
Prioritization and engagement order
Two ideas govern the order you engage targets:
Priority — which target matters most. In a defensive or tactical context priority is driven by threat (the nearest, the most dangerous, the one presenting the most immediate problem first). In a match context priority is driven by the stage rules and efficiency. Either way, you decide a priority before you start rather than engaging randomly.
Efficiency — given equal priority, engage in the order that minimizes wasted gun movement. Generally that means working across an array in a logical sweep (e.g., near-to-far, or one side to the other) rather than jumping back and forth, so each transition is short and your eyes lead naturally to the next target. Plan the path your eyes and gun will take through the array. Where priority and efficiency conflict, priority wins — you handle the most important target first even if the path is less tidy.
Confirming hits and the failure to neutralize
Speed is worthless if the rounds don't connect, so multi-target work requires confirming each hit before fully committing to the next target. Call your shot (you saw the sight where it needed to be when it broke) and, where you can, see the impact. If a target isn't down/neutralized — a miss, or hits that didn't do the job — you must recognize it and address it rather than moving on assuming success. The discipline is to engage with enough attention that you know whether each target was hit, not to spray and hope. In practical shooting this is the difference between a clean stage and one full of misses you never noticed; in a defensive context it's far more serious.
Round accountability
Every round must be accounted for. Two dimensions:
Ammunition awareness — know roughly how many rounds you've fired and have left, so a dry gun mid-array isn't a surprise (it triggers the reload from Carbine Fundamentals). Good shooters maintain a loose count and plan reloads at natural breaks rather than running dry at the worst moment.
Backstop and consequence awareness — and this is the non-negotiable one — you are responsible for every single round that leaves the muzzle, including misses and pass-throughs. You must know what is beyond each target before you fire (safety rule four), account for where a miss would go, and never fire a shot whose backstop and consequences you haven't accepted. Multiple-target speed never overrides this; the marksman who can engage an array fast and account for every round is competent, the one who only does the first is dangerous.