Northern Edge is Alaska’s largest and premier joint training exercise designed to practice operations, techniques and procedures as well as enhance interoperability among the services. The exercise provides real-world proficiency in detection and tracking of units at sea, in the air and on land and response to multiple crises in the Indo-Asia-Pacific region. Thousands of participants from all the services, Airmen, Soldiers, Sailors, Marines and Coast Guard personnel from active duty, Reserve and National Guard units are involved. (Lance Cpl. Andy Martinez/Marine Corps)