"The Department of Defense is clear-eyed about the challenges climate change poses.
“The pressures caused by climate change will influence resource competition while placing additional burdens on economies, societies, and governance institutions around the world,” the most recent Quadrennial Defense Review, issued in 2014, states. “These effects are threat multipliers that will aggravate stressors abroad such as poverty, environmental degradation, political instability, and social tensions—conditions that can enable terrorist activity and other forms of violence.”"
To prepare for these eventualities, the US Navy is transitioning to alternative sources of energy - both on land and at sea - even as it pursues greater energy efficiency.
To learn more, read this recent article in The Harvard Business Review. https://hbr.org/2017/07/managing-climate-change