Hammer," the top-secret U.S. precision attack on Iran's nuclear facilities launched overnight was the largest strike using B2 bombers in history and it was the longest flight involving the fleet since 2001,

A group of American B-2 bombers — the only jets capable of deploying 30,000-pound bunker-buster munitions with a shot at breaching the mountains shrouding Iran’s Fordow nuclear facility — flew west across the Pacific Ocean.