She supervised the installation of concealed, motion-tracking anti-air guns. She worked an earthmover, opening enough space for mortar emplacements on the mountains overlooking the Forerunner. She spent hundreds of hours watching the camera footage from many, many concealed watch posts, placed in an increasingly wide circle around the Forerunner Base. The only thing she didn't do was tackle any of their scientific problems. There were several facing their nascent colony, and it was possible Olivia could've made some progress figuring some of them out. What had killed the previous, human crew? Could future humans be created who were immune to the effects? What about the anomalies about the planet itself? Olivia didn't care, leaving those questions for when the scientists woke.