hartzler. >> thank you, mr. chairman. good to see you again, admiral. >> yes, ma'am. >> i would like to home in the questions on china some more. and also readiness. so china has been investing in several next-generation military technologies, including hypersonic missiles, directed energy weapons, autonomous weapons, systems and space-based weapons. are you concerned about the progress china is making in its development of these technologies and how can the united states maintain its edge? >> without going into classified, i'll answer yes to all of that. i am very concerned about their development -- their developments in these systems, particularly hypersonics. what we can do is to develop our own hypersonic weapons and improve our defenses against theirs. one of the problems we have, though, is -- is this inf treaty issue before us. so hypersonics, you know -- that can match the chinese weapons will be precluded by inf. so we're precluded from developing land-based weapons that can match the chinese land-based weapons