Tango midnight

Terrorists have released a genetically modified disease, called X-Pox, on the world. Tad Mikleszewski (called TM by nearly everyone) buys research time on the International Space Station, to work on a cure for X-Pox. But the equipment in the Harmony Laboratory module was salvaged from old Russian military labs, and perhaps TM's skills are a little bit out of date. A tiny leak in the seal of the isolation box where TM is manipulating the X-Pox pathogen, and Harmony is contaminated by the disease that kills within three weeks. Whether Russian or American, someone is going to have to get up there, and fast, to decontaminate the space station.