US Air Force celebrates their 72nd Birthday News by: Dallis Ontiveros Posted: Sep 18, 2019 / 10:51 AM HST / Updated: Sep 18, 2019 / 12:01 PM HST The United States Air Force is celebrating its 72nd birthday after becoming a separate service from the Army. And to celebrate – we sent Dallis Ontiveros to Hickam Field to learn more about the men and women who serve our country.