https://www.i-programmer.info/news/204-challenges/12075-darpa-launches-3-million-subterranean-challenge.htmlAugust 22, 2018/Client: DARPA /by Beth Boyter https://spirecomm.com/wp-content/uploads/2018/08/I-Programmer-e1535477725652.png 45 125 Beth Boyter https://spirecommunications.com/wp-content/uploads/2017/12/SpireLogo-300x138.png Beth Boyter2018-08-22 17:30:172018-08-28 17:35:42DARPA Launches $3 Million Subterranean Challenge