Prosecutors in the felony gun trial of Hunter Biden wrapped up their case Friday morning, paving the way for the first son’s lawyers to begin putting on their defense. With President Biden overseas to mark the 80th anniversary of the D-Day invasion, the younger Biden’s team was poised to call at least two witnesses — including the owner and an employee of a gun store where Hunter bought a firearm on Oct. 12, 2018, while allegedly addicted to drugs.