https://blog.wongcw.com/2023/02/06/darpa%e7%82%ba%e5%85%b6liberty-lifter%e5%a4%a7%e5%9e%8b%e6%b0%b4%e4%b8%8a%e7%bf%bc%e5%9c%b0%e6%95%88%e6%87%89%e6%a9%9f%e9%a0%85%e7%9b%ae%e6%8c%91%e9%81%b8%e7%ab%b6%e7%88%ad%e5%b0%8d%e6%89%8b/