AMALGAM EAGLE 18 exercise planners visit WADS Published May 30, 2018 By Kimberly D. Burke Western Air Defense Sector JOINT BASE LEWIS-MCCHORD, Wash. -- AMALGAM EAGLE 18 exercise planners from the U.S. and Mexico toured the Western Air Defense Sector May 22, 2018. AMALGAM EAGLE 18 is a NORAD/U.S. Northern Command tactical exercise which is designed to enhance mutual warning and information sharing procedures in support of a cooperative response to illicit flights that cross the U.S.-Mexico border.