Complex sentence: Beyond national security, BIS is tasked with ensuring the health of the U.S. economy and the competitiveness of U.S. industry and seeks to promote a strong and vibrant defense industrial base that can develop and provide technologies that will enable the United States to maintain its military superiority.
Split into simpler sentences: Beyond national security, BIS is tasked with ensuring the health of the U.S. economy and the competitiveness of U.S. industry. They seek to promote a strong and vibrant defense industrial base that can develop and provide technologies that will enable the United States to maintain its military superiority.