The events of 9/11 as they unfolded through actual audio.
Britain's Challenger 2 Battle Tank
The Challenger 2 is a British main battle tank (MBT) currently in service with the armies of the United Kingdom and Oman. It was designed and built by the British company Vickers Defence Systems (now known as BAE Systems Land and Armaments). Challenger 2 is an extensive redesign of the Challenger 1. Although the hull and automotive components seem similar, they are of a newer design and build than those of the Challenger 1, and fewer than 5% of components are interchangeable. Challenger 2 replaced Challenger 1 in service with the British Army and is also used by the Royal Army of Oman. It has seen operational service in Bosnia, Kosovo and Iraq.