The next step in a drill campaign is usually to continue the analysis with SAM (the Sample Analysis at Mars instrument suite), which tends to be quite power hungry. As a result, we want to make sure we’re going into the next plan with enough power for that. That meant that even though we’ve got a lot of free time this weekend, with three sols and CheMin taking up only the first overnight, we needed to think carefully about how we used that free time. Sometimes, when the science teams deliver our plans, we’re overly optimistic. At times this optimism is rewarded, and we’re allowed to keep the extra science in the plan. Today we needed to strategize a bit more, and the midday science operations working group meeting (or SOWG, as it’s known) turned into a puzzle session, as we figured out what could move around and what we had to put aside for the time being.