NASA Kennedy Space Center’s Health Physics team sets up a simulated radiation control boundary around the trailer carrying a multi-mission radioisotope thermoelectric generator (MMRTG) simulator on Feb. 7, 2019. NASA’s Mars 2020 rover will be powered by an MMRTG. The arrival of the MMRTG simulator enables the team to practice radiation control and monitoring protocols, including setting up radiation control points and postings around the trailer prior.