Weapons with the Heavy Beam trait follow all the rules for Beam weapons, with the exception that the line is not stopped by Structures, and Detachments behind the Structure can be hit by the weapon. The line of a Heavy Beam is still stopped by Impassable terrain.
Weapons with the Heavy Beam trait can damage Structures - any Structure the line passes over suffers Hits as if it were another Detachment, in addition to any Detachments within the Structure.
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