It was 2007, and [Gwenyth] Todd, then 42, was a top political adviser to the U.S. Navy's 5th Fleet. Previous 5th Fleet commanders had resisted various ploys by Bush administration hawks to threaten the Tehran regime. But in spring 2007, a new commander arrived with an ambitious program to show the Iranians who was boss in the Persian Gulf. Vice Adm. Kevin J. Cosgriff ... was itching to push the Iranians, Todd and other present and former Navy officials say. Cosgriff's idea, presented in a series of staff meetings, was to sail three big decks," as aircraft carriers are known, through the Strait of Hormuz - to put a virtual armada, unannounced, on Iran's doorstep. No advance notice, even to Saudi Arabia and other gulf allies. Not only that, they said, Cosgriff ordered his staff to keep the State Department in the dark, too. To Todd, it was like something straight out of "Seven Days in May," the 1964 political thriller about a right-wing U.S. military coup. Todd feared that the Iranians would respond, possibly by launching fast-attack missile boats into the gulf or unleashing Hezbollah on Israel. Then anything could happen: a collision, a jittery exchange of gunfire - bad enough on its own, but also an incident that Washington hawks could seize on to justify an all-out response on Iran. Preposterous? It had happened before, off North Vietnam in 1964. In the Tonkin Gulf incident, a Navy captain claimed a communist attack on his ship. President Lyndon Johnson swiftly ordered the bombing of North Vietnam, touching off a wider war that turned the country upside down and left more than 58,000 U.S. servicemen dead.