Resident Evil: Retribution2012

Alice:
It was raining.

Albert Wesker:
Climate control. Wind, rain. They can even make it snow if they wanted to.

Alice:
Why build such a place?

Albert Wesker:
Simple. The Umbrella Corporation derived its primary income from the sale of viral weaponry, something that's impossible to test in the real world. They re-created the center of New York, simulated an outbreak, showed it to the Russians, and sold them the virus. They simulated an outbreak in Moscow, sold it to the Americans. An outbreak in Tokyo.

Alice:
Sold it to the Chinese.

Ada Wong:
An outbreak in China.

Alice:
Sold it to the Japanese.

Albert Wesker:
Exactly. Everyone had to have it. The Umbrella Corporation built a new arms race. Only, this time, it was biological rather than nuclear. Highly profitable. And this is where it all happened. This is Umbrella's greatest creation. The belly of the beast.

Alice:
So why don't we just get the hell out of here?