U.S. Senate committee holds hearing about effectiveness of Emergency Alert Systems after Hawaii mishap.

WATCH: Senate committee weighs emergency alert system after Hawaii’s false alarm

Politics

A Senate committee will evaluate the Emergency Alert Systems after a recent alarm falsely alerted Hawaiians about an incoming ballistic missile.

The U.S. Senate Committee on Commerce, Science and Transportation, chaired by Sen. John Thune, a Republican from South Dakota, explored the system's effectiveness, including its use of wireless alerts.

On Jan. 13, Hawaiians received an early-morning message on phones and television, that read, "BALLISTIC MISSILE THREAT INBOUND TO HAWAII. SEEK IMMEDIATE SHELTER. THIS IS NOT A DRILL."

The message was sent by accident, but was not corrected for nearly 40 minutes.

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WATCH: Senate committee weighs emergency alert system after Hawaii’s false alarm first appeared on the PBS News website.

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