On the rooftop

*BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM* *BOOM*

The thunder of the artillery was especially deafening on the roof of the barracks.

Normally, the rooftop was empty since it was out of bounds for most of the Sloth soldiers so there was no one there to be bothered by the noise

The barracks as well as other military facilities of the third line of defense were built in such a way so that the noise from the outside couldn't be transferred to the inside.

That's why, no soldier would be caught outside of the facilities - not to mention on the rooftop of one - in the middle of the artillery fire, as long as they didn't absolutely have to be there.