United

The weaker moments come with Reed and Trip aboard the drone ship. It's just not very credible that they are not able to disable this thing more easily. I would have just gone on a tour of the ship, firing phase pistols at anything that looked vaguely important - surely it wouldn't take more than half an hour or so to thoroughly disable a ship like this! And when Reed does eventually manage to inflict a significant hit on the ship, self-repair systems are invoked to bring it back online for the battle with Enterprise. This also strains credibility - systems like this are really too advanced for the period. Hell, this kind of tech would be advanced by TNG standards.

Still, the episode holds together reasonably well and there’s another nice twist with the revelation that there's an Andorian under that helmet – I’d been wondering what it was in there!

When the drone ship is found, four of the ships in the fleet detect it. None of them is Enterprise herself. The ships in the fleet are Vulcan, Tellarite and Andorian. Vulcan and Andorian ships are faster than Enterprise – so how come Enterprise is the first one to intercept the drone?

Talas dies because the phase pistol she was shot with was set to kill, causing "phase pulse infection". How on Earth can an energy pulse "infect" you? And in any case, she wasn't shot with a phase pistol, she was shot with one of the MACO's plasma pistols.