Temblor hits as U.S. announces plan to send additional ships to area

National Palace tumbles; 3 million people affected..

7.0 earthquake rocks the island of Haiti. Millions have been affected by this devastating disaster.

3 million people are affected, Red Cross says; thousands of buildings razed.. Haitians walk past damaged buildings in Port-au-Prince on Tuesday after an earthquake rocked the impoverished Caribbean nation.