Top US General Dan Caine, Chairman of the Joint Chiefs of Staff, on Monday gave an initial timeline and some details on the start of the US military operation in Iran. So far four US service members have been killed and four others remain seriously wounded, the military has said.
February 27:
At 15:38 ET (20:38 GMT), the US Central Command received "the final go order" from President Donald Trump: "Operation Epic Fury is approved. No aborts. Good luck."
US forces made final preparations: Air defense batteries checked systems to respond to Iranian attacks; pilots and crews rehearsed strike packages for the final time; air crews began loading final weapons, two carrier strike groups began to move toward launching points.
The first moves were made by US Cyber Command and US Space Command, which worked to disrupt, degrade and blind Iran's ability to see, communicate and respond before the attack began.
February 28:
01:15 ET (06:15 GMT/09:45 Iran time), more than 100 aircraft from land and sea launched, "forming a single synchronized wave."
The daylight strike was based on a, "trigger event conducted by the Israel Defense Forces, enabled by the US intelligence community."
This was an apparent reference by Caine to Israel's surprise strike on Iran's supreme leader, Ali Khamenei that was aided by US intelligence.
The first shots fired were Tomahawk missiles sent by the US Navy, while on the ground forces fired precision standoff weapons. The attack struck more than 1,000 targets in the first 24 hours.
March 1-2:
The initial phase of the attack focused on Iran's command and control infrastructure, naval forces, ballistic missile sites and intelligence infrastructure, "designed to daze and confuse them," Caine said.
The combined impact of strikes resulted in the establishment of air superiority, which would enhance the protection of US forces and allow them to continue to work over Iran.
The effort included American B-2 bombers, which flew a 37-hour round-trip sortie from the continental United States.
Israel has separately carried out hundreds of sorties against hundreds of targets.
The operation continues with US Patriot and THAAD batteries, and ballistic missile defense-capable navy destroyers, executing intercepts of hundreds of missiles targeting US and partner forces.
The threat from one-way attack drones remains persistent 57 hours into the attack.
(Reporting by Doina Chiacu, editing by Michelle Nichols and Nick Zieminski)