What is the truth?  

There are many unanswered questions about the Navy Yard shootings.
On a video tape, 2 men in uniforms were seen coming out of the building
with guns.  The Capital Police swat team was told to stand down. I use to work for a military instillation and have to show ID every time I entered, whether the Guard knew me or not. These instillations are always protected
by a guard of Marines.
If you go to the third hour of the Political cesspool of 9/21, it is dedicated to
the unanswered questions of that day.  The Host of the program received
a call from a friend that worked inside the building, and said they have
guns.

Also they said more then one person involved.