FLASHBACK 2020 - D U M Bs Deep Underground Military Bases Underground War, THE INVISIBLE WAR
https://rumble.com/v4y5uk0-flashback-2020-d-u-m-bs-deep-underground-military-bases-underground-war-the.html
This video gives details about the advanced train system in the tunnels like Ray told Jason about plus alot of other details involving this ongoing silent war.