Dramatic phrase aside, this is less like turning the sky into a steel door and more like putting up a very aggressive “no parking” sign for aircraft.
Within minutes of the reports circulating, commentators online began asking the obvious question: if Iran can “lock the sky” over Hormuz that quickly, could U.S. carriers operating nearby suddenly find themselves inside a very uncomfortable missile umbrella? Military analysts—real ones, not just people with a dramatic podcast voice—point out that Iran has spent decades building layered air-defense networks designed specifically to challenge American air superiority in the region.