The cryogenic propellant tank was moved out of Cell N at the Michoud Assembly Facility (MAF) in New Orleans on June 20, where spray-on foam insulation (SOFI) was applied to the outside of the tank.

Following primer, technicians apply a foam-based thermal protection system ... The two massive propellant tanks for the rocket collectively hold more than 733,000 gallons of super-chilled propellant.