Practice and Preparations: 2012 London Olympics

London Olympics A Olympics flag flies in front of Big Ben Monday, July 23, 2012, in London. The 2012 London Olympics opening ceremonies are scheduled for Friday, July 27. (AP Photo/Charlie Riedel)

AP Photo/Charlie Riedel

London Olympics Shooting A worker attaches an Olympics rings logo to a fence at the Royal Artillery Barracks, during final preparations for the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. (AP Photo/Rebecca Blackwell)

London Olympics Rowing Rowers practice before the 2012 Summer Olympics, Tuesday, July 24, 2012, in Eton Dorney, near Windsor, England. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Natacha Pisarenko)

AP Photo/Natacha Pisarenko

Travel-Trip-Olympics Beyond London This Sept. 25, 2010 photo shows the Olympic rings on the approach to Olympiastadion Berlin, where U.S. gold medalist Jesse Owens won four gold medals during the 1936 Summer Olympics in Berlin, Germany. Germany hosted two notorious games: The 1936 Berlin Olympics, which Adolf Hitler tried to turn into a showcase of Aryan supremacy, and the 1972 Munich Olympics, married by a hostage crisis that left 11 Israelis dead. A tour takes you to the stands overlooking the track area where Owens and other athletes competed. (AP Photo/Anick Jesdanun)

AP Photo/Anick Jesdanun

Brady Ellison U.S. Olympic archer Brady Ellison trains at the 2012 Summer Olympics, Saturday, July 21, 2012, in London. Archery competition at the London Olympics begins July 27. (AP Photo/Ben Curtis)

AP Photo/Ben Curtis

Miranda Leek U.S. Olympic archer Miranda Leek trains at the 2012 Summer Olympics, Saturday, July 21, 2012, in London. Archery competition at the London Olympics begins July 27. (AP Photo/Ben Curtis)

AP Photo/Ben Curtis

2012 Olympics Workers carry scaffolding next to the Riverbank Arena in the Olympic Park in the 2012 Summer Olympics, Sunday, July 15, 2012, in London. The Riverbank Arena will be the hockey competition venue during the Olympics. (AP Photo/Jae Hong)

AP Photo/Jae Hong

Piotr Kuleta Piotr Kuleta of Poland trains for the Canoeing Flatwater competition before the 2012 Summer Olympics, Tuesday, July 24, 2012, in Eton Dorney near Windsor, England. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Chris Carlson)

AP Photo/Chris Carlson

London Olympics Flowers bloom outside Olympic Stadium at the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Patrick Semansky)

London Olympics Cycling The German cycling team trains for the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Sergey Ponomarev)

London Olympics Flowers are planted near the Olympic Stadium at the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Julio Cortez)

AP Photo/Julio Cortez

London Olympics Diving A diver trains at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Lee Jin-man)

AP Photo/Lee Jin-man

London Olympics Badminton Players practice during a training session for the badminton competition of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27.(AP Photo/Saurabh Das)

AP Photo/Saurabh Das

London Olympics Badminton Players practice during a training sessionfor the badminton competition at the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27.(AP Photo/Saurabh Das)

AP Photo/Saurabh Das

London Olympics Diving Synchronized divers train at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Lee Jin- man)

London Olympics Pedestrians pass a poster advertising the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. The city will host the 2012 London Olympics with opening ceremonies for the games scheduled for Friday, July 27. (AP Photo/Ben Curtis)

Sun Yang of China Sun Yang of China trains at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Lee Jin- man)

London Olympics Diving A diver practices at the Aquatics Center at the Olympic Park for the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Matt Slocum)

AP Photo/Matt Slocum

London Olympics Visitors stand in the entrance of the ExCeL Center ahead of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Charlie Neibergall)

AP Photo/Charlie Neibergall

Ryan Lochte Ryan Lochte of the US trains at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Jin-Man Lee)

Brady Ellison, Jennifer Nichols, Miranda Leek U.S. Olympic archer Brady Ellison, right, Jennifer Nichols, center, and Miranda Leek, left, remove their arrows as they train at the 2012 Summer Olympics, Saturday, July 21, 2012, in London. Archery competition at the London Olympics begins July 27. (AP Photo/Ben Curtis)

AP Photo/Ben Curtis

London Olympics Badminton Members of Denmark's badminton team warm up during a training session for the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Andres Leighton)

AP Photo/Andres Leighton

London Olympics Soccer Workers set up a goal in preparation for the 2012 Summer Olympics, at the city of Coventry stadium, in Coventry, England, Tuesday, July 24, 2012. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Hussein Malla)

London Olympics Equestrian Equestrians train with their horses at Greenwich Park for the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The city will host the 2012 London Olympics with opening ceremonies scheduled for Friday, July 27. (AP Photo/Markus Schreiber)

AP Photo/Markus Schreiber

London Olympics A man pulls a dolly inside Olympic Park prior to the start of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Julio Cortez)

AP Photo/Julio Cortez

London Olympics Diving A diver trains at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Matt Slocum)

AP Photo/Matt Slocum

London Olympics Badminton A player's shadow falls on the court during a training session for the badminton competition at the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Saurabh Das)

AP Photo/Saurabh Das

Saina Nehwal India's Saina Nehwal practices during a training session for the badminton competition of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27.(AP Photo/Saurabh Das)

Najwan El Zawawi, Khadija Mohammed In this Monday, June 18, 2012 photo, Najwan El Zawawi, background, UAE women's weightlifter team coach, assists Khadija Mohammed, who competes in the 75-kilogram category and will be the first female lifter from the Gulf at the Olympics and the first Emirati to qualify for the Olympics outright, at the Al Shabab stadium in Dubai, United Arab Emirates. (AP Photo/Kamran Jebreili)

AP Photo/Kamran Jebreili

London Olympics A taxi passes one of the special Olympic traffic lanes, which go into effect on Wednesday, ahead of the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Ben Curtis)

London Olympics British armed forces personnel walk at the Olympic Park ahead of the 2012 Summer Olympics, in London, Tuesday, July 24, 2012. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Lefteris Pitarakis)

AP Photo/Lefteris Pitarakis

London Olympics Swimming Swimmers from China attend a practice session at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Tuesday, July 24, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Jin-Man Lee)

London Olympics Diving Divers practice at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27.(AP Photo/Daniel Ochoa de Olza)

London Olympics Swimming Swimmers practice at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27.(AP Photo/Daniel Ochoa de Olza)

London Olympics Swimming Swimmers practice at the Aquatics Center at the Olympic Park ahead of the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. Opening ceremonies for the 2012 London Olympics will be held Friday, July 27.(AP Photo/Daniel Ochoa de Olza)

London Olympics The Olympic Rings hang above a platform near a sculpture in St. Pancras International station for the 2012 Summer Olympics, Wednesday, July 25, 2012, in London. The opening ceremonies for the 2012 London Olympics will be held Friday, July 27. (AP Photo/Patrick Semansky)

AP Photo/Patrick Semansky