Rear Adm. Lorin Selby, chief of naval research, delivers remarks at the “HACKtheMACHINE” unmanned competition in Alexandria, Va., Nov. 17, 2021. HACKtheMACHINE Unmanned is the first in a series of public-facing technology challenges aimed at accelerating discovery and teambuilding between the DoN, industry and academia for the creation of groundbreaking unmanned and autonomous systems. (U.S. Navy photo by Michael Walls)