A Puerto Rican flag waves on top of a pile of rubble as debris is removed from a main road in Guánica. Puerto Rico’s governor declared a state of emergency after a powerful 6.4-magnitude earthquake hit the U.S. territory Tuesday, causing widespread damage.

A Puerto Rican flag waves on top of a pile of rubble as debris is removed from a main road in Guánica. Puerto Rico’s governor declared a state of emergency after a powerful 6.4-magnitude earthquake hit the U.S. territory Tuesday, causing widespread damage.