The F-16 dollar backing
Since 1979 the US power establishment, from Wall Street to Washington, has maintained the status of the dollar as unchallenged global reserve currency. That role, however, is not a purely economic one. Reserve-currency status is an adjunct of global power, of the US determination to dominate other nations and the global economic process. The United States didn't get reserve-currency status by a democratic vote of world central banks, nor did the British Empire in the 19th century. They fought wars for it.
For that reason, the status of the dollar as reserve currency depends on the status of the United States as the world's unchallenged military superpower. In a sense, since August 1971 the dollar is no longer backed by gold. Instead, it is backed by F-16s and Abrams battle tanks, operating in some 130 US bases around the world, defending liberty and the dollar.