US Air Force's Central Command released photos showing bombers arrived at Al Udeid US Air Base in Qatar.
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However, the US Air Force did not specify where other bombers have landed; only saying that they'd landed in "southwest Asia".
Earlier, the Pentagon released a video showing four nuclear-capable B-52 bombers taking off for the Middle East.
In turn, Iran's Supreme National Security Council (SNSC)'s spokesman Keivan Khosravi, following the deployment announcement, argued that the US move was a mere attempt at "psychological warfare".
According to Boeing, the B-52 Stratofortress has been flying for nearly 65 years. The eight-engine, 390,000-pound (176,901-kilogram) jet was the first US long-range, swept-wing heavy bomber. The last of the 744 B-52s were produced in 1962.