“Within the UK, there is an apparent abundance of the existential necessities. The air is fresh; water comes without limits from a tap; supermarket shelves are stocked with food from all over the world; power, connectivity and entertainment come at the touch of a button; security, education and health care are managed; and supply chains operate without interruption. The system will continue to appear stable. Until it isn’t.” – Brigadier Tim Symonds (Head Productivity and Sustainability, Army Headquarters) reflects on what the Service needs to do to keep its lights on in a new era of geopolitical energy competition.