[varyouga]

There are plenty of ways to get someone out of a surrounded building. Non-flammable gas for one.

Even if they couldn't get him out right away, he wasn't going anywhere. Even if he had gas masks, they would be useless within 1-2 days.

Also, how did they know nobody else was inside?

[dirtboy]

Non-flammable gas for one.

They had already tried that.