DRTA Robotic Underground Munition

In 2010 the Defense Threat Reduction Agency (DRTA) sent a Request For Information of an anti-bunker underground smart weapon named Robotic Underground Munition (RUM). Its main requirements are to be unmanned, air-delivered and with on-board sensors and intelligence to avoid obstacles.
More: https://www.fbo.gov/index?s=opportunity&mode=form&id=1021a87dd2c2cfcef17d34e4258ae0cd&tab=core&_cview=0