Soldiers from the 1st Battalion, 501st Infantry (Airborne) take up defensive positions. Two soldiers from the 1st Battalion, 501st Infantry (Airborne) take up defensive positions as the rest of their unit lands at the Donnely drop zone in Alaska on Feb. 18, 1998, during Exercise Northern Edge 98. More than 90,000 soldiers, sailors, Marines, airmen Coast Guardsmen and National Guardsmen are participating the exercise. Northern Edge 98 is designed to practice joint operational techniques and procedures, increasing interoperability between the services. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 499482-E-SFD51-063.jpg Photo Gallery