This sorta reminds me of that early 1980s two-parter about a Soviet raid into Alaska. Part 1 ended with US troops (I think National Guard led by David Soul and Cathy Lee Crosby) hunkered down in oil pipeline segments awaiting the Rooskie attack:
U.S. Army Staff Sgt. Larry Clapper and Spc. Christopher Dotson take a break while an Iraqi army soldier searches unused sewage pipes at a factory in Mansour, Iraq, April 14, 2007. Clapper and Dotson are both from Alpha Company, 1st Battalion, 23rd Infantry Regiment. DoD photo by Sgt. Tierney P. Nowland, U.S. Army. (Released)
Speaking of Alaska and the Rooskies, a reader had this comment on the Russian proposal to build a tunnel under the Bering Sea:
If they actually do this, you’ll be able to drive from/to pretty much anywhere in the world except Antarctica and that weird penal continent down under!