A 5.0 magnitude earthquake occurred in Western Indian-Antarctic Ridge

https://earthquake.usgs.gov/earthquakes/eventpage/us1000jdgc/executive

A 5.2 magnitude earthquake occurred 29.83mi S of Tanaga Volcano, Alaska.

https://earthquake.usgs.gov/earthquakes/eventpage/us1000jdg2/executive

Tanaga Island was established as a Navy emergency landing field in July 1943 as an adjunct to the Adak Naval Operation Base. Navy Seabees built a runway, small-craft pier, mooring area, office and storage buildings, radio building, galley and mess facilities, dispensary, and 4 miles (6 kilometres) of gravel road in 1943, near Lash Bay in the southwest of the island. The site was abandoned in 1945. The control tower is still shown on nautical charts.

https://thediplomat.com/2015/11/the-hypocrisy-of-us-freedom-of-navigation-operations-in-the-south-china-sea/

The United States repeatedly drew an analogy between the U.S. intrusion in the waters close to the Nansha Islands and a Chinese naval vessel’s passage within 12 nautical miles of the Aleutian Islands in September, claiming that its activity was “innocent passage.” The fact is, under international law, the Tanaga Pass of the Aleutian Islands is open to international navigation, so “transit passage” rather than “innocent passage” applied to the Chinese warship.