180221-F-JW079-1015
A participant in the Air Force Institute of Technology Demo Days on Wright-Patterson Air Force Base, Ohio, uses markers Feb. 21, 2018, to trace a color-coded track for a small robot, like the one in the lower-right corner, to follow. Sensors on the bottom of the robot interpreted the color patterns into commands. (U.S. Air Force photo by R.J. Oriez)