Rescue workers search for survivors through the debris on February 22, 2011 in Christchurch, New Zealand. The 6.3 magnitude earthquake - an aftershock of the 7.1 magnitude quake on September 4 - struck 20km southeast of Christchurch at around 1 p.m. local time.
- [Martin Hunter/AFP/Getty Images]

Locals head to a memorial service commemorating the one year Christchurch earthquake anniversary on February 22, 2012 in Christchurch, New Zealand.
- [Martin Hunter/AFP/Getty Images]

An elderly couple watches recovery efforts in Christchurch, New Zealand. The city has put over $24 billion towards rebuilding and repairing damage from the devastating earthquake.
- [Marty Melville/AFP/Getty Images]

Christchurch Mayor Bob Parker welcomes families to Latimer Square Service ahead of the one year Christchurch earthquake anniversary on February 22, 2012 in Christchurch, New Zealand. A 6.3 magnitude earthquake struck Christchurch, the South Island's largest city, on February 22, 2011 killing 185 people and severely damaging the city and surrounding suburbs.
- [Martin Hunter/AFP/Getty Images]

Damaged buildings are demolished in the 'Red Zone' area in downtown Christchurch on February 21, 2012 nearly one year after a 6.3 quake hit New Zealand's second largest city, killing 185 people, flattening office blocks, buckling roads and bringing historic buildings crashing down. More than 60 percent of the masonry heritage buildings that defined Christchurch, creating what locals called 'a little slice of England', have been lost and many more are severely damaged and need expensive reinforcement.
- [Marty Melville/AFP/Getty Images]

Governor General of New Zealand Jerry Mateparae (R) walks past the 'Bridge of Remembrance' as he leaves the Cashel container mall area in downtown Christchurch on February 21, 2012 nearly one year after a 6.3 quake hit New Zealand's second largest city.
- [Marty Melville/AFP/Getty Images]

Souvenirs are left in the vacant lot where the CTV building was demolished inside the cordoned off red zone in the central business district ahead of the one year Christchurch earthquake anniversary on February 21, 2012 in Christchurch, New Zealand.
- [Martin Hunter/AFP/Getty Images]

Christchurch earthquake damaged buildings are seen during a earthquake recovery update visit on August 12, 2011 in Christchurch, New Zealand.
- [Martin Hunter/AFP/Getty Images]