Thousands of bees swarm on the wing of a Delta Air Lines flight at Pittsburgh International Airport in Pittsburgh. The flight from Pittsburgh to New York was delayed until Repasky, a beekeeper, was called in to remove them.

Cleaning staff workers toss pieces of papers during a protest at Barcelona's airport on Tuesday. Cleaning staff working for a company who have a contract with the airport demonstrated against pay and benefits cuts made by their employer.

Passengers line up in front of check-in desks during a protest by the cleaning staff at Barcelona's airport.

A woman carries her luggage on an escalator at the Terminal 1 of El Prat airport in Barcelona.

People take pictures of Delta Airlines Flight 177 from Dublin, Ireland receiving a water cannon salute at the newly opened Maynard H. Jackson Jr. International Terminal at Hartsfield-Jackson Atlanta International Airport in Atlanta, Georgia May 16, 2012. Flight 177 was the first flight to arrive at the new $1.4 billion terminal, a 1.2 million square foot facility.

Harrison Lin (L), his brother Kai and their mother Tiffany listen during the opening ceremony for Delta Airlines Flight 295 to Tokyo, Japan at the newly opened Maynard H. Jackson Jr. International Terminal at Hartsfield-Jackson Atlanta International Airport in Atlanta. Flight 295 was the first flight to depart from the new $1.4 billion terminal, a 1.2 million square foot facility.

Passenger Wayne Meason, of Colorado Springs, Colo., waits to board a flight to Dusseldorf, Germany, out of the the new Maynard Holbrook Jackson Jr. International Terminal at Atlanta's airport on the first day it begins operating flights Wednesday.

Members of the Nassau County Police pull a Jet Blue A320 plane 100 feet during the third annual Jet Blue Airbus A320 Plane Tug at JFK Airport on May 7 in New York City.

Kieren Marwood of the Metropolitan Police Services in London catches his breath after his team pulled a Jet Blue A320 plane 100 feet during the third annual Jet Blue Airbus A320 Plane Tug at JFK Airport on May 7.

Jet Blue Airways ground crews pull a Jet Blue A320 plane 100 feet during the third annual Jet Blue Airbus A320 Plane Tug at JFK Airport on May 7, 2012 in New York City.

John E. Brennan stands naked after he stripped down while going through a security screening area on April 17 as a protest against airport security procedures. Click the image to view the complete photograph.

Ukrainian border guards take part in a master class in the Borispol airport near Kiev on Friday. Hairdressers and make-up artists conducted master classes for Ukrainian border guards who will meet tourists at Ukraine's main air hub during the Euro 2012 football championship.

A Ukrainian border guard takes part in a master class in the Borispol airport near Kiev.

Ukrainian border guards chat as they take part in a master class in the Borispol airport.

Ukrainian border guard working at the Borispol airport near Kiev.

Ukrainian border guards and a sniffer dog are seen in the Borispol airport near Kiev.

A United Shuttle Air Express passenger plane with hydraulic problems made an emergency landing at Newark Liberty International Airport Monday evening, forcing the temporary closure of the airport. No injuries were reported.

Nepalese firefighters try to control a grass fire close to the runway of Nepal's international airport in Katmandu, Nepal, Tuesday, Feb. 7, 2012. The grass fire has closed Nepal's only international airport and forced flights to divert to India. Police spokesman Raviraj Shrestha said the fire spread close to the runway but away from the terminal building Tuesday evening. No damage or casualties were reported, and it was brought under control within hours.

Locals run carrying the water pipes of the fire brigade as they try to extinguish the fire caught at the grassland and bushes adjoining the Tribhuvan International Airport in Kathmandu on Feb. 7. National and international flights were affected due to the fire that started from the bushes adjoining the eastern part of the TIA, according to the local media reports.

Nepalese children watch as a fire spreads at the grassland and bushes adjoining Tribhuvan International Airport in Kathmandu on Feb. 7.