The American flag should be flown at half-staff Sunday, Dec. 7, for Pearl Harbor Remembrance Day.

Flags across Michigan and the United States should be flown at half-staff to honor those killed during the attack in Hawaii in 1941.

President Trump issued a proclamation on Dec. 5 for the flag to be flown at half-staff in accordance to Public Law 103-308.

What happened at Pearl Harbor?

In 1941, Japanese forces attacked a U.S. naval base in Pearl Harbor in Hawaii. The attack marked the entry of the United States into World War II.

More than 2,000 Americans were killed and more than 1,000 injured, according to the statute establishing Pearl Harbor Remembrance Day.

More than 300 planes and 20 ships were destroyed , according to history.com.

After the attack, the U.S. declared war o

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