A story that hinges on alien tech – a transportation slab that enables a copy of a person to be made on a matching slab at a remote location.
Margery is working for the government on a clandestine task – duplicating a soldier on a distant research station which has had a leak and where radiation is pouring in. It’s an ongoing process, as the duplicated soldier lasts scant minutes before radiation poisoning kills him : minutes he must spend patching the interior walls.
However, this start to go awry as the duplicate of the soldier starts questioning his orders, and Margery finds she has to take matters into her own hands – which provides her(selves) with opportunities, and challens.