A view of a Van Gogh-inspired hot air balloon being inflated during the Philippine International Hot Air Balloon Fiesta at Clark Freeport Zone in Pampanga province, north of Manila February 12, 2015. According to the organizer, a total of 32 hot air balloons are part of the four-day event. (Photo by Erik De Castro/Reuters)

Hot air balloons dot the sky at the start of the 19th Philippine Hot Air Balloon festival Thursday, February 12, 2015 at Clark Economic Zone, Pampanga province north of Manila, Philippines. (Photo by Bullit Marquez/AP Photo)

The Miss Daisy hot air balloon flies during the Philippine International Hot Air Balloon Fiesta at Clark Freeport Zone in Pampanga province, north of Manila February 12, 2015. (Photo by Erik De Castro/Reuters)

An octopus-shaped hot air balloon takes off at the start of the 19th Philippine Hot Air Balloon festival Thursday, February 12, 2015 at Clark Economic Zone, Pampanga province north of Manila, Philippines. (Photo by Bullit Marquez/AP Photo)

The Old Lady and the Shoe hot air balloon prepare to take off during the Philippine International Hot Air Balloon Fiesta at Clark Freeport Zone in Pampanga province, north of Manila February 12, 2015. (Photo by Erik De Castro/Reuters)

Spectators take pictures and watch the Burnie the Little Devil hot air balloon as it takes off during the Philippine International Hot Air Balloon Fiesta at Clark Freeport Zone in Pampanga province, north of Manila February 12, 2015. (Photo by Erik De Castro/Reuters)

Hot air balloons dot the sky at the start of the 19th Philippine Hot Air Balloon festival Thursday, February 12, 2015 at Clark Special Economic Zone, a former U.S. Air Force base in Pampanga province, north of Manila, Philippines. Now on its 19th year, the hot air balloon festival features a total of 32 hot air balloons participating from all over the world. (Photo by Bullit Marquez/AP Photo)

A balloonist is silhouetted as he fixes a hot air balloon being inflated during the Philippine International Hot Air Balloon Fiesta at Clark Freeport Zone in Pampanga province, north of Manila February 12, 2015. (Photo by Erik De Castro/Reuters)

Firemen aim their hose on a hot air balloon that caught fire while being inflated during the Philippine International Hot Air Balloon Fiesta at Clark Freeport Zone in Pampanga province, north of Manila February 12, 2015. (Photo by Erik De Castro/Reuters)

Hot air balloons are inflated as they take part in the 19th Philippine Hot Air Balloon festival Thursday, February 12, 2015 at Clark Economic Zone, Pampanga province north of Manila, Philippines. (Photo by Bullit Marquez/AP Photo)

Special-shape hot air balloons known as Vincent van Gogh, left, and Maximus The Beagle Dog, are prepare to take off at the start of the 19th Philippine Hot Air Balloon festival Thursday, February 12, 2015 at Clark Economic Zone, Pampanga province north of Manila, Philippines. (Photo by Bullit Marquez/AP Photo)