Latest "tunnels" stories

The Air Force is testing a new bunker-busting bomb that could counter North Korea and Iran

Research on the 5,000-pound weapon began in 2017.

By Rachel S. Cohen

18 months ago

DoD wants your ideas on how to operate, navigate underground

Rising populations, denser urban areas and existing security threats are forcing military and civilian emergency workers underground.

By Kyle Rempfer

5 years ago