U.S. Air Force Airmen from the 673d Civil Engineer

U.S. Air Force Airmen from the 673d Civil Engineer Group sweep up fallen ceiling tiles at the Elmendorf Fitness Center at Joint Base Elmendorf-Richardson, Alaska, Dec. 1, 2018, after a 7.0 magnitude earthquake hit Anchorage and surrounding areas at 8:29 a.m. Nov. 30. The epicenter was about 8 miles north of Anchorage, at a depth of some 25 miles. There were zero casualties. Alaska is the most seismically active region of the United States. In 1964, southern Alaska experienced the most powerful earthquake known to hit North America – a 9.2 magnitude quake, with an epicenter about 75 miles east of Anchorage. (U.S. Air Force photo by Staff Sgt. Curt Beach)