The Knights of Imbria are most commonly seen in artwork bearing their famous, or infamous heart shaped escutcheons
A standard crowd control/riot shield
Pavise: a full-body concave shield used to by medieval archers as defensive walls while reloading.
Pavisade: archaic term. a row of shields hung on the side of a ship to protect it at war and discourage boarding by enemies
What do you do when your shield is more courageous than you?
Space, and indeed, the outdoors in general, usually lack cover stout enough to stand up to heavy lasers and plasma weapons. This man portable unit is one designed solution to the rule.
A planet (or city, valley ect) where those who enter witness protection can escape old age and death itself, so they can live for centuries without aging-provided they maintain their cover perfectly. If they are outed by anyone or ever utter their true name, they age the number of years they have not aged since the day they entered witness protection (which might mean that they age centuries in seconds and crumble into dust and bone.)