1) Dr. Mensah had bought a (used, somewhat battered) SecUnit, which had then disappeared, no one knew where. 2) Dr. Mensah had said, in an interview sent out in newsbursts carried by transports all across the Corporation Rim, that someone needed to investigate Milu because GrayCris abandoning a terraforming facility was suspicious. (Never mind that the journalist had brought up Milu, not her.) 3) A SecUnit had shown up on Milu and helped an assessment team contracted by GoodNightLander Independent to a) save the facility from falling into the planet, and b) acquire proof that it was an illegal mining operation and not a terraforming facility at all.