A National Guardsman stands guard outside the ruins of the Northridge Meadows Apartments where 16 people died during the January 1994 earthquake that rocked Southern California. Since then, many of these kinds of apartments have been retrofitted to withstand a large quake.

On Jan. 17, 1994, a 6.7 magnitude quake rocked the suburbs north of Los Angeles, leaving 57 dead and causing more than $43 billion in damage. Officials worry LA isn’t ready for the next big quake.

(Image credit: TIM CLARY/AFP/Getty Images)

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