Airplane manufacture has a different export rating than spacecraft manufacture, thus (probably) the different posture re: tours. For example, at JPL (where I us

Airplane manufacture has a different export rating than spacecraft manufacture, thus (probably) the different posture re: tours. For example, at JPL (where I used to work / give tours), there's a multi-day lead time for background checks on visitors if they intend to enter any location not pre-cleared for tours. E.g., looking at equipment or actual manufacturing.