Despite the cooling of tensions between Iran and the United States, the Pentagon has deployed a number of strategic bombers to the Indian Ocean as further deterrence against additional Iranian actions.
The Air Force has deployed an unspecified number of B-52 Stratofortress and B-2 Spirit strategic bombers to the Naval Support Facility (NSF) Diego Garcia, a small but strategically important naval and airbase in the Indian Ocean. A number of cargo and mid-air refueling planes have also joined the strategic bombers.
B-52s have a range of almost 9,000 miles; B-2s have a range of over 11,000 miles with just a single mid-air refueling. Tehran is approximately 3,500 miles away from NSF Diego Garcia; the southern coast of Iran is about 3,000 miles away.
Both aircraft are capable of carrying nuclear payloads. B-52s can carry approximately 70,000 lbs worth of munitions (conventional or nuclear). B-2s can carry about 45,000 lbs but they are stealth-capable, making them an ideal option against targets protected by heavy anti-aircraft systems.