Tensions between U.S. and Iranian naval forces in the Arabian Sea have escalated sharply, culminating in a direct confrontation this week when an Iranian vessel approached dangerously close to the USS Abraham Lincoln, one of the U.S. Navy’s premier aircraft carriers. American forces responded with gunfire and missile strikes.
According to two U.S. officials briefed on the matter, who spoke to CBS News on condition of anonymity, the incident unfolded earlier this week. A U.S. Navy warship first attempted to engage the approaching Iranian vessel using its 5-inch, 54-caliber Mark-45 naval gun—a fully automated, deck-mounted cannon that has been a mainstay on American destroyers and cruisers since the 1970s. The gun reportedly missed its target multiple times. It remains unclear whether the shots were intended as warnings or precision strikes aimed at disabling the vessel.
When the cannon fire failed to deter the Iranian ship, U.S. forces launched a military helicopter armed with AGM-114 Hellfire missiles. The helicopter successfully hit the vessel with two missiles. The current condition of the Iranian ship and the fate of its crew are unknown, with no official information released on casualties or damage.
The USS Abraham Lincoln was operating in the Arabian Sea as the centerpiece of its carrier strike group, accompanied by destroyers including the USS Spruance and USS Michael Murphy. At least six additional guided-missile destroyers were also active in the area last week. The helicopter involved was likely either an MH-60R Seahawk, used for anti-surface warfare, or a Marine Corps AH-1Z Viper attack helicopter—both capable of deploying Hellfire missiles—though officials have not specified which type was used.
U.S. Central Command (CENTCOM) offered no comment when contacted by CBS News, responding only with, “We have nothing for you on this.” Such restraint is common in ongoing operations, where details are often withheld pending full review.
This latest clash fits into a pattern of increasing confrontations. In early February, U.S. forces shot down an Iranian Shahed-139 drone that aggressively approached the Abraham Lincoln. The carrier strike group had deployed to the region in late January, with President Trump publicly describing the deployment as an “armada” to project strength amid rising tensions with Tehran.
Since the start of broader U.S. military operations against Iran, American forces have damaged or destroyed more than 90 Iranian naval vessels, according to CENTCOM figures—highlighting a sustained campaign to degrade Iran’s maritime capabilities. The Abraham Lincoln is one of two U.S. aircraft carriers currently in the Middle East, underscoring the scale of American commitment.
The Mark-45 gun, a versatile automated system capable of engaging surface and air targets, forms a key part of naval surface warfare. Its reported misses raise questions about engagement conditions, though none have been publicly addressed. The subsequent use of precision Hellfire missiles, originally designed for anti-armor roles but highly effective against surface vessels, demonstrates a rapid escalation in response when initial measures fell short.
As details remain limited and neither side has issued a full public statement, the incident highlights the volatile rules of engagement in a high-stakes environment. For U.S. commanders, it underscores the risks of rapid escalation at sea. The Arabian Sea has become a critical theater where split-second decisions carry far-reaching consequences in the ongoing conflict.
This account is based on anonymous U.S. officials; CENTCOM has been contacted for comment.
