Patriot missile crewman, SPC Jeremy Chapman, with the Headquarters, Headquarters Battery, 35th Air Defense Artillery, (ADA), Fort Lewis, Washington repairs gaps in a camouflage netting that will be used to conceal the 35th ADA's Command Post. The 35th ADA while deployed, will provide Patriot Missile defense against enemy fighter strikes and simulated SCUD missile launches during the world's largest joint service, multi-national tactical air operations exercise