An Iranian ship came within 1,000 yards of a Navy destroyer in the Persian Gulf on Monday, making it the second time this year that Iran has tested the waters with the U.S.
The Iranian Revolutionary Guard “fast attack craft” approached the guided missile destroyer USS Mahan with its weapons manned, according to a report published Tuesday evening.
Mahan turned on the danger signal, fired flares, manned its weapons and changed course to avoid colliding with the Iranian ship.
No warning shots were fired by either party.
A similar incident took place in January when USS Mahan fired warning shots at an Iranian warship near the Strait of Hormuz.

