Mirage-2000 pilots gesture as the plane taxis on the closed-off section of Sun Yat-sen freeway at Chang-hua county in central Taiwan, about 200 km south of Taipei May 15, 2007. The fighter jets were practising for the possibility that air bases were knocked out by enemy attacks forcing jets to refuel and re-equip elsewhere. This is the second stage of the annual Han Kuang -- or Chinese Glory-- exercise.