Getting ready for London 2012

With the Olympics drawing closer by the day, London is getting ready for it's biggest event in many years.

Backdropped by the historic Tower Bridge, a giant Olympic Rings floats on the River Thames in London in the run-up for the Olympic games, during its launch to mark 150-days until the start of the London 2012 Olympic games, Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

Backdropped by the historic Tower Bridge, a giant Olympic Rings floats on the River Thames in London in the run-up for the Olympic games, during its launch to mark 150-days until the start of the London 2012 Olympic games, Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

Backdropped by the historic Tower Bridge, a giant Olympic Rings floats on the River Thames in London in the run-up for the Olympic games, during its launch to mark 150-days until the start of the London 2012 Olympic games, Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

A woman photographs the giant Olympic rings that are 11 meters (36 feet) tall and 25 meters (82 feet) wide, as they are unveiled on the River Thames in London, as preparations for the upcoming London 2012 Olympic games gathers pace with 150-days until the start of the games, in London early Tuesday, Feb. 28, 2012. The historic Tower Bridge seen in background. (AP Photo/Sang Tan)

A woman photographs the giant Olympic rings that are 11 meters (36 feet) tall and 25 meters (82 feet) wide, as they are unveiled on the River Thames in London, as preparations for the upcoming London 2012 Olympic games gathers pace with 150-days until the start of the games, in London early Tuesday, Feb. 28, 2012. The historic Tower Bridge seen in background. (AP Photo/Sang Tan)

A giant Olympic Rings floats on the River Thames in London during its launch to mark 150-days to go to the start of the London 2012 Olympic games, early Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

Backdropped by the historic Tower Bridge, a giant Olympic Rings floats on the River Thames in London in the run-up for the Olympic games, during its launch to mark 150-days until the start of the London 2012 Olympic games, Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

Backdropped by the historic Tower Bridge, a giant Olympic Rings floats on the River Thames in London in the run-up for the Olympic games, during its launch to mark 150-days until the start of the London 2012 Olympic games, Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

Backdropped by the historic Tower Bridge, a giant Olympic Rings floats on the River Thames in London in the run-up for the Olympic games, during its launch to mark 150-days until the start of the London 2012 Olympic games, Tuesday, Feb. 28, 2012. (AP Photo/Sang Tan)

A man with a mock injury is escorted out during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system. (AP Photo/Alastair Grant)

A man with a mock injury is escorted out during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system. (AP Photo/Alastair Grant)

A man with a mock injury is escorted out during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system. (AP Photo/Alastair Grant)

A man with a mock injury is escorted out during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system. (AP Photo/Alastair Grant)

Emergency service personnel attend the scene during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system.(AP Photo/Alastair Grant)

Emergency service personnel attend the scene during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system.(AP Photo/Alastair Grant)

An man with a mock injury is escorted out during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system. (AP Photo/Alastair Grant)

An man with a mock injury is escorted out during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system. (AP Photo/Alastair Grant)

Emergency service personnel escort people with mock injuryies away during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system.(AP Photo/Alastair Grant)

Emergency service personnel escort people with mock injuryies away during an exercise of a simulated terrorist attack on the London Underground network at a disused tube station in central London, Wednesday, Feb. 22, 2012. British police, fire and ambulance staff held a huge pre-Olympics security exercise Wednesday centering on a mock terrorist attack on the London subway system.(AP Photo/Alastair Grant)

Al-Asrafa Stadium

Proposed Olympics Stadium