pretty straightforward. previous work experiences, education, skills, etc. make sure you do research on their projects especially the high-profile ones and prepare accordingly. public outreach can include some many different things so just try to make one or more of your previous experiences connected with it. make it sound like a reasonable story

The interview process was interesting. I learned more about the job position, realizing it is travel-based and requires much in-person work. The interviewers described it as a fast-paced and dynamic environment.