[Brainy actually grins at Robbie saying he thought he was the only one with a history of fighting nuns, but that's because, well. Superheroing. It's ridiculous in any century.]

The team doesn't only fight in remote locations, and admittedly, the most recent spate of missions took place on populated planets. But quite a few missions take place in the vacuum of space or in the hideouts of our enemies, which are usually far from civilization.

[wryly] The UP member worlds have so much worldwide security surveillance that the skull-shaped volcanic lairs of old will no longer do. Not when they can be spotted by high-resolution satellite imaging.

[It's harder for villains to hide out on civilized worlds. (Other than Rimbor, anyway, but it's called the 'crime planet' for a reason.)]