There were welding kits in the boxcar. They pulled the pins from a length of rail a thousand spans from the siding and severed it. They also found a section further away where the level was maintained by wooden supports over a shallow dip. The half full cylinders were packed in this with explosives.
One autogun stayed atop the boxcar. The other was taken into the seed grass. Kess found a ridge and set up with his baby long rifle and a pair of field glasses. The shadows were beginning to stretch when he gestured the sighting of smoke down the track.
Lensman did a last survey of his men. They were arrayed in the seed grass with a number of the prisoners. Some of the track gang were still working, to fool spotters on the train. The stonks were hidden in the shadow of the boxcar and the bomb lobbers were behind it, aimed at the track beyond the explosives.
Lensman joined his man with the detonator. The key was turned and the explosives were primed. As the train appeared, Lensman studied it through field glasses. In front of the locomotive was a flat bed with an anti air mounted on it. With no threat from above, it had been traversed down for ground targets. Behind the locomotive were four passenger carriages, two boxcars with autogunners on top and another flatbed with an anti air.
“We take out the flatbed first. It will mean firing the explosives before the train reaches the loose section, but such is fate.” Lensman announced.