Global aerospace giants have moved beyond a wait-and-see approach to make sales pitches for South Korea\'s fighter jet program during an ongoing international aerospace fair here, carefully navigating the direction of the new acquisition under review by Seoul officials. Lockheed Martin, Boeing and European aerospace group EADS kick-started a preliminary competition by showcasing their combat jets and simulators during the Seoul International Aerospace and Defense Exhibition (ADEX), which opened Tuesday to run through Sunday at the Korea International Exhibition Center, just north of Seoul.