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Indian Air Force helicopters cross paths while performing an aerobatic flight on the second day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Thursday, Feb. 7, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

U.S. Air Force C-17 Globemaster III, a cargo plane, takes off near Falcon HB-JSZ on the third day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Friday, Feb. 8, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

A HAL "Black Tiger" Light Combat Helicopter (LCH), currently under development for the Indian armed forces, performs during Aero India 2013 at the Yelahanka Air Force station in Bangalore on February 6, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows Wednesday with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. Manjunath Kiran/AFP/Getty Images

Indian Air Force single engine, tailless fighter aircraft Tejas performs during rehearsals on the eve of the Aero India 2013 at Yelahanka air base in Bangalore, India, Tuesday, Feb. 5, 2013. Aviation companies from around the world are expected to participate in the five-day event that starts Feb. 6. (AP Photo/Aijaz Rahi)

Indian Air Force helicopters cross paths while performing an aerobatic flight on the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Flying Bulls Zlin 50LX single-engine and single-seater aerobatic display team from the Czech Republic performs on the third day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Friday, Feb. 8, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Visitors crowd near a U.S. Air Force C-17 Globemaster, a transport aircraft, on display on the second day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Thursday, Feb. 7, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

A French twin-engine Rafale fighter aircraft performs on the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Indian army personnel come down from a chopper to show their skills during the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Journalists watch the Flying Bulls Zlin 50LX single-engine and single-seater aerobatic display team from the Czech Republic perform on the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

A French twin-engine Rafale fighter aircraft, performs on the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Visitors cheer as they watch Russian Knights, the aerobatic team of the Russian Air Force, performing in their Sukhoi Su-27 and Su-27UB fighter aircraft during "Aero India 2013" on the outskirts of the southern Indian city of Bangalore February 8, 2013. REUTERS/Stringer

An official makes a phone call on his mobile phone while standing next to Rafael's missiles on display at the "Aero India 2013" on the outskirts of the southern Indian city of Bangalore February 8, 2013. REUTERS/Stringer

Indian Air Force helicopters cross each other as they perform aerobatic flight on the third day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Friday, Feb. 8, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

An Indian Air Force aircraft flies during rehearsals ahead of the Aero India 2013 in Yelahanka air base in Bangalore, India, Monday, Feb. 4, 2013. Aviation companies from around the world are expected to participate in the five-day event that starts Feb. 6. (AP Photo/Aijaz Rahi)

Visitors crowd at the static display area for aircraft on the third day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Friday, Feb. 8, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

The Indian Air Force Sarang aerobatics team perform in their HAL Dhruv helicopters during Aero India 2013 at the Yelahanka Air Force station in Bangalore on February 6, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows Wednesday with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. Manjunath Kiran/AFP/Getty Images

Members of The Flying Bulls aerobatics team from the Czech Republic fly in formation in their Zlin Z-50 aircraft during Aero India 2013 at the Yelahanka Air Force station in Bangalore on February 6, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows Wednesday with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. Manjunath Kiran/AFP/Getty Images

Visitors look the Indian Air Force Sarang aerobatics team perform during the second day of the ongoing 9th Edition of Aero India Show 2013 in Bangalore on February 7, 2013. India, the world's leading importer of weaponry, is hosting one of Asia's biggest aviation trade shows with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP PHOTO/ STRSTR/AFP/Getty Images

Members of The Flying Bulls aerobatics team from the Czech Republic fly in formation in their Zlin Z-50's during the second day of the ongoing 9th Edition of Aero India Show 2013 in Bangalore on February 7, 2013. India, the world's leading importer of weaponry, is hosting one of Asia's biggest aviation trade shows with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP PHOTO/ STRSTR/AFP/Getty Images

Members of The Flying Bulls aerobatics team from the Czech Republic fly in formation in their Zlin Z-50's during the second day of the ongoing 9th Edition of Aero India Show 2013 in Bangalore on February 7, 2013. India, the world's leading importer of weaponry, is hosting one of Asia's biggest aviation trade shows with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP PHOTO/ STRSTR/AFP/Getty Images

Visitors watch a fighter jet perform during the second day of the ongoing 9th Edition of Aero India Show 2013 in Bangalore on February 7, 2013. India, the world's leading importer of weaponry, is hosting one of Asia's biggest aviation trade shows with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP PHOTO/ STRSTR/AFP/Getty Images

Visitors look the Indian Air Force Sarang aerobatics team perform during the second day of the ongoing 9th Edition of Aero India Show 2013 in Bangalore on February 7, 2013. India, the world's leading importer of weaponry, is hosting one of Asia's biggest aviation trade shows with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP PHOTO/ STRSTR/AFP/Getty Images

A Russian SU 27 lands during the 9th Edition of the Aero India show at Yelahanka Air Base in Bangalore on February 8, 2013. India, the world's leading importer of weaponry, is hosting one of Asia's biggest aviation trade shows with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP PHOTO/MINISTRY OF DEFENCE

The Russian Airforce aerobatic display team, Russian Knights arrive in formation in their Sukhoi Su-27s on the third day of the 9th edition of the Aero India 2013 at Yelahanka Air Force station in Bangalore on February 8, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows February 6 with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP/Manjunath KIRANManjunath Kiran/AFP/Getty Images

Lieutenant General of the Indian Army, Narendra Singh, (R), HAL Chairman, R.K. Tyagi,(2R), Major General, AOG (Army Aviation) General P.K. Bharali, (2L) and Managing Director of HAL, P. Sounderajan pose for a photograph during the handing over of the Light Combat Helicopter (LCH), 'Rudra' to the Indian Army on the third day of the 9th edition of the Aero India 2013 at Yelahanka Air Force station in Bangalore on February 8, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows February 6 with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP/Manjunath KIRANManjunath Kiran/AFP/Getty Images

Visitors look at aircraft parked at the static display area on the third day of Aero India 2013 at Yelahanka Air Force station in Bangalore on February 8, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows February 6 with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP/Manjunath KIRANManjunath Kiran/AFP/Getty Images

The "Flying Bulls" considered one of the world's leading aerobatic display teams from the Czech Republic perform on the third day of Aero India 2013 at Yelahanka Air Force station in Bangalore on February 8, 2013. India, the world's leading importer of weaponry, opened one of Asia's biggest aviation trade shows February 6 with Western suppliers eyeing lucrative deals and a Chinese delegation attending for the first time. AFP/Manjunath KIRANManjunath Kiran/AFP/Getty Images

Visitors walk past a display of missiles by Israel's Rafael Advanced Defense Systems Ltd. on the second day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Thursday, Feb. 7, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Visitors watch a Sukhoi Su-30 fighter aircraft fly over other aircraft on display on the third day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Friday, Feb. 8, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Tejas, an Indian Air Force light combat aircraft, performs during the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Visitors watch Indian Air Force helicopters perform an aerobatic flight on the second day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Thursday, Feb. 7, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

U.S. Air Force personnel rest under the shade of a KC-135, an aerial refueling and transport aircraft, on the third day of the Aero India 2013 at Yelahanka air base in Bangalore, India, Friday, Feb. 8, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)

Flying Bulls Zlin 50LX single-engine and single-seater aerobatic display team from the Czech Republic perform on the opening of the Aero India 2013 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 6, 2013. More than 600 aviation companies along with delegations from 78 countries are participating in the five-day event that started Wednesday. (AP Photo/Aijaz Rahi)