The smoke trail of a U.S. Navy drone that was shot out of the sky over the Strait of Hormuz by Iran can be seen in video released by the Pentagon on Thursday as tensions escalated over what military officials described as an "unprovoked attack." "This was an unprovoked attack on a U.S. surveillance asset that had not violated Iranian airspace at any time during its mission," Guastella said. US NAVY DRONE SHOT DOWN BY IRANIAN MISSILE OVER STRAIT OF HORMUZ IN 'UNPROVOKED ATTACK,' CENTRAL COMMAND SAYSIn a video released Thursday afternoon, the smoke trail of the drone can be seen in a black-and-white video as it plummets from the sky. It's used to spy on Iranian military communications and track shipping in the busy waterways. President Trump warned that America "will not stand" for Iran shooting down a U.S. drone, while at the same time leaving open the possibility that the attack was unintentional.

Source: Fox News June 20, 2019 18:08 UTC