There were also lots of Iraqi soldiers moving around the city with big weapons - the first time this has been seen.
The Iraqi government deny that the US forces have enjoyed the success they say
they have, saying that they are not in control of the airport as they claim.
Other main points:
US troops and aircraft launched an attack on the city of Karbala, some 60km (37 miles) south of Baghdad
The US Army is reported to have captured the Suwayra headquarters of the Republican Guard's Medina Division
In Basra, British forces say they are moving further into the city and have destroyed a building where one of Iraq's most important military commanders, Ali Hassan al-Majid - also known as Chemical Ali - was thought to be staying