This section examines China's evolving security perceptions; select inputs to China's military modernization; and current and future capabilities of China's naval, air, missile, and space forces. It concludes with a discussion of the implications of China's military modernization for the United States. The statements and assessments presented here are based on Commission hearings, briefs by U.S. and foreign government officials, consultations with non-governmental experts on China's military, the Commission's fact- finding trip to Asia, and open-source research and analysis.