The following sounds were used under the Attribution 3.0 Unported (CC BY 3.0) licenses which can be found at
https://creativecommons.org/licenses/by/3.0/legalcode

Explosion by Iwiploppenisse
https://freesound.org/people/Iwiploppenisse/sounds/156031/

dieselgenerator.wav by Daroc
https://freesound.org/people/daroc/sounds/259912/