L5 CERT — Charles G. Dyer

The year is 2055, and mining helium-3 on the moon is Earth's salvation from a global energy crisis. In addition to the moon base, there is a secret space station at Lagrange Point 5, and apparently none of the colonists know why.
Life on a space station is fraught with danger. Damage from meteorites, accidents, equipment failure and ordinary medical problems are all threats to the well-being of the colonists.
To deal with such situations the station has emergency response teams. In addition to their normal work, these volunteers are on standby to render what assistance and repairs they can.
They never expected to find that sabotage was being added to the list of potential problems. Terrorism adds a new dimension to their work and their subsequent way of life.