North American Aerospace Defense Command issued a statement saying it would be enforcing Federal Aviation Administration flight restrictions over Anchorage, Alaska, "in support of the presidential summit.

The military base on the northern edge of Anchorage had to meet the security requirements for the historic meeting.

Friday's summit between President Donald Trump and Russian President Vladimir Putin is expected to take place at Joint Base Elmendorf-Richardson in Anchorage, Alaska. Why it matters: The military base played a crucial role in the U.