At one of Kiryat Gat's main shopping complexes, US Army camouflage does everything but blend in.American troops in fatigues move between shawarma stands and sports-shoe stores, a new presence in the southern industrial city, part of a multinational civil-military coordination center set up to monitor the Gaza ceasefire.The center, housed in a converted logistics building about 15 miles from the Gaza border, opened last week with roughly 200 American personnel as well as smaller contingents from