A Tank Only Fears Four Things (by Seth Dickinson)
The surgery makes Tereshkova into a tank.
In the war, she never showed any fear, not at Fulda, not even in the snows of Vogelsberg when the Americans dropped the first bomb. When Clinton and Yeltsin shook hands at Yalta, when the word came down to the 8th Guards Army to yield Frankfurt and withdraw to Soviet soil, Tereshkova spat into the dirt and said: Too bad. We were turning things around. And Yorkina, who sat beside her in the cab, laughed and shook her head. Between them the Geiger counter made soft cricket noises.
When they were discharged, they each promised to write, having failed in their goodbyes to say what Tereshkova, at least, felt in her heart: I needed you. I wouldnt be okay without you.
But she isnt okay. On her first day home in Vereya, Tereshkova hears the diesel engine of a truck passing on the road, and she begins to sweat.
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http://www.lightspeedmagazine.com/fiction/a-tank-only-fears-four-things/