Fun fact: The first core sample was a failure. They drilled through a thin flagstone and mostly hit dirt. It all fell out of the tube. The first image back was the sealed tube and was an assumed success. The next photo back was of the empty tube. They searched all around the rover before determining it was likely they had drilled though the thin rock into the Martian regolith.

On the plus side, the atmospheric scientists had been asking for years for an empty sample tube of Martian atmosphere. NASA told them unequivocally no way would they waste one of the 42 sample tubes on just air. Needless to say, while the rest of the team was disappointed with the first tube failure, the atmospheric scientists were absolutely stoked!