<prompt> Translate the following text to EnglishKwa kawaida, Wizara ya Ulinzi imebuni mifumo mpya ya silaha katika mazingira ya ushindani mkubwa ambayo kwa kawaida hulazimisha mipango ya ununuzi kusimamia teknolojia, kubuni, na hatari ya utengenezaji wakati huo huo.  <response>: DOD has historically developed new weapon systems in a highly concurrent environment that usually forces acquisition programs to manage technology, design, and manufacturing risk at the same time. 