The Pentagon has send six B-52 strategic bombers to military base on Diego Garcia that is beyond the range of Irans ballistic missiles to prepare to hit Tehran if given the order.
Poster Comment:
The B-2 is capable of all-altitude attack missions up to 50,000 feet (15,000 m), with a range of more than 6,000 nautical miles (6,900 mi; 11,000 km) on internal fuel. It costs a billion dollars each. The Russian and Iranian satellites will pick it up on launch. The B-2 has never been tried against the S-300 or S-400.
Iranian missiles could take it down but they might need Russian help technically to light it up using Khibiny ECW or whatever else they have.