“WHEN RYAN ZINKE, America’s secretary of the interior, turned up for his first day in office a year ago, the ex-Navy Seal arrived on a horse called Tonto, wearing a cowboy hat.”

You can learn about the training and selection US Navy SEALs here.

Reference

The Economist (2018) Special Report: The Geopolitics of Energy. All Hail the Shale. The Economist. 17 March 2018, pp.5.