LIFE GOES ON.

The south end of the powered display track at Cold Spring Shops headquarters represents a section of the South Donetsk Railway somewhere along the boundaries of the Russian Soviet Federated Socialist Republic and the Ukrainian S. S. R.  The bridge over the escape well exit is installed in such a way as to be easily removed or sacrificed in extremis.

In real life, a bridge of that size would have its own antiaircraft defense installation.  Models of a suitable Soviet portable antiaircraft gun exist, and from time to time they turn up on Amazon or other collectible or resale sites.

The instructions are primarily illustrations, although there is advice in English and a few other languages.  Note, though, the package it arrived in.

Despite the exigencies of a wartime economy, a trader somewhere in Ukraine had some of this model to sell, and an Amazon presence from whence to sell it, and the postal service was still handling such parcels.