Rising Tensions US - Iran.

A second US aircraft carrier has arrived in Middle Eastern waters as promised by US President George W. Bush in January amid an escalating crisis with nearby Iran over its nuclear program.
The Stennis entered the US 5th Fleet area of operations... to conduct maritime security operations in regional waters, as well as to provide support for ground forces operating in Afghanistan and Iraq.
Iran has also been carrying out military exercises in the region, including test-firing missiles and building drones that military commanders boasted could hit the US Navy.