U.S. stock futures declined on Friday following a report that President Donald Trump ordered, and then rescinded, an airstrike on military installations in Iran. The planned strike, which was reported by The New York Times, was meant to take place early Friday in response to the downing on Thursday of a U.S. drone patrolling the Strait of Hormuz. Trump had warned that Iran made a "big mistake" and warned of consequences to follow, but appeared to pull back from executing a military response only hours before U.S. jets were set to take off.