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.
Could come across a band of refugees. Could have been thrown out of their town by a tyrant taking of their land, bought out by somebody unexpectedly, fleeing a battle they know is coming their way. Could be proof of what they are searching for, hints and tips of what is to come, or just to broaden the reality of the world.