Farnborough International Air Show

The RAF Red Arrows perform during an air display at the Farnborough Airshow in southern England July 23, 2010. REUTERS/Toby Melville (BRITAIN - Tags: TRANSPORT IMAGES OF THE DAY BUSINESS MILITARY)

A World War II RAF Hawker Hurricane fighter aircraft performs during an air display at the Farnborough Airshow in Farnborough July 23, 2010. REUTERS/Toby Melville (BRITAIN - Tags: TRANSPORT MILITARY)

A General Dynamics F-16 Fighting Falcon fighter jet performs during an air display at the Farnborough Airshow in Farnborough July 23, 2010. REUTERS/Toby Melville (BRITAIN - Tags: TRANSPORT MILITARY)

Spectators and photographers are seen through a heat haze as they attend the Farnborough Airshow in Farnborough July 23, 2010. REUTERS/Toby Melville (BRITAIN - Tags: TRANSPORT SOCIETY)

Visitors view a Gulfstream G3 business jet, produced by Gulfstream Aerospace, at the Farnborough Airshow in Farnborough July 22, 2010. Image has been rotated 180 degrees. REUTERS/Luke MacGregor (BRITAIN - Tags: TRANSPORT BUSINESS IMAGES OF THE DAY)

Aerobatic team The Blades perform at the Farnborough Airshow in southern England, July 22, 2010. REUTERS/Luke MacGregor (BRITAIN - Tags: TRANSPORT BUSINESS)

A visitor talks to a staff member of Air Tractor beside a AT-802U combat ready aircraft, designed to operate from dirt roads and rough airfields, on display at the Farnborough International Airshow, Farnborough Thursday, July 22, 2010.

The Red Devils, during a display, during the Farnborough International Airshow, in Farnborough, England, Wednesday, July 21, 2010. (AP Photo/Sang Tan)

A Vulcan jet bomber prepares to land during an air display at the Farnborough International Airshow in Hampshire, on July 21, 2010. AFP PHOTO/ BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

FARNBOROUGH, ENGLAND - JULY 20: An Airbus Military A400M aircraft lands at the Farnborough Airshow on July 20, 2010 in Farnborough, England. The Farnborough International Airshow is the biggest event of it's kind attracting people from all over the world. The show traditionally sees the announcement of orders for military jets but due to government's defence budgets being slashed to help reduce huge public deficits, major deals may be scarce. (Photo by Dan Kitwood/Getty Images)

epa02256529 The Airbus A380 pictured during a flying display at the Farnborough Airshow in Hampshire Britain, 21 July, 2010. The Farnborough Airshow opened 19 July. EPA/ANDY RAIN

The Blades aerobatic team perform at the Farnborough Airshow in Hampshire, on July 20, 2010. AFP PHOTO/ BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

FARNBOROUGH, ENGLAND - JULY 20: Members of the public look around a JF17 aircraft at the Farnborough Airshow on July 20, 2010 in Farnborough, England. The Farnborough International Airshow is the biggest event of it's kind attracting people from all over the world. The show traditionally sees the announcement of orders for military jets but due to government's defence budgets being slashed to help reduce huge public deficits, major deals may be scarce. (Photo by Dan Kitwood/Getty Images)

FARNBOROUGH, ENGLAND - JULY 20: An Italian Airforce crew member demonstrates the capabilities of the Typhoon Eurofighter during a flight simulation at the Farnborough Airshow on July 20, 2010 in Farnborough, England. The Farnborough International Airshow is the biggest event of it's kind attracting people from all over the world. The show traditionally sees the announcement of orders for military jets but due to government's defence budgets being slashed to help reduce huge public deficits, major deals may be scarce. (Photo by Dan Kitwood/Getty Images)

FARNBOROUGH, ENGLAND - JULY 20: A member of the public looks inside an Apache AH1 Helicopter at the Farnborough Airshow on July 20, 2010 in Farnborough, England. The Farnborough International Airshow is the biggest event of it's kind attracting people from all over the world. The show traditionally sees the announcement of orders for military jets but due to government's defence budgets being slashed to help reduce huge public deficits, major deals may be scarce. (Photo by Dan Kitwood/Getty Images)

epa02253789 The U.S fighter plane F18 is pictured at the Farnborough Airshow in Hampshire Britain, 19 July, 2010. The Farnborough Airshow opened 19 July. EPA/ANDY RAIN

The Royal Air Force Red Arrow display team and a Vulcan aircraft fly over the 2010 Farnborough International Airshow in Farnborough, southern England July 19, 2010. REUTERS/Kieran Doherty (BRITAIN - Tags: TRANSPORT BUSINESS)

A Boeing 787 Dreamliner aircraft sits on the tarmac of the Farnborough Airshow, Hampshire, on July 18, 2010. Aerospace giant Boeing said July 15, 2010 that it might delay to 2011 the delivery of the first 787 Dreamliner aircraft scheduled at the end of this year. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

Jul. 18, 2010 - Farnborough - The command control of the Boeing is pictured from the inside. Boeing 787 Dreamliner lands in the UK for first time at the Farnborough International Air Show, in Farnborough, Great Britain on 18 July 2010.UPPA/FACUNDO ARRIZABALAGA (Credit Image: © UPPA/ZUMApress.com)

A F-22 flies in a display during Farnborough International Airshow, Farnborough, England, Monday, July 19, 2010. (AP Photo/Sang Tan)

epa02253809 A RQ-4 Block 20 Global Hawk high altitude long endurance unmanned aerial reconnaissance plane uf the U.S. Air Force is pictured at the Farnborough Airshow in Hampshire, Britain, 19 July 2010. The Farnborough International Airshow opened on 19 July and will last until 25 July 2010. EPA/ANDY RAIN

An Airbus Military A400M aircraft flies during an air display during the Farnborough International Airshow in Hampshire, southern England, on July 19, 2010. Boeing and Airbus won multi-billion-dollar orders for their planes at the Farnborough airshow Monday, as Dubai's Emirates airline and a new US leasing company snapped up 81 jets. AFP PHOTO/ BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

epa02253811 The unmanned Boeing X-45 'Phantom Ray' experimental aircraft is seen in a hall at the Farnborough Airshow in Hampshire, Britain, 19 July 2010. The Farnborough International Airshow opened on 19 July and will last until 25 July 2010. EPA/ANDY RAIN