The North American XB-70 Valkyrie is rolled out at Palmdale, Calif. Designed to fly at three times the speed of sound and at altitudes above 70,000 feet, the XB-70 is originally planned as a manned bomber, but funding limitations allow for only two aircraft, to be used strictly for testing and research.
The U.S. military struck three Iranian oil tankers on Sept. 5, as the Trump administration and Iran battle for control over the Strait of Hormuz.
