Douglas A-26/B-26 Bomber

The Douglas A-26 Invader became the B-26 after the B-26 Marauder was withdrawn from service. The Invader first entered service during WWII and was in production until 1965 (and used longer). Not many WWII planes had such a long service life.
A notable feature is the eight gun nose. In addition there were 3 machine guns built into each wing for a total of 14 .50 caliber machine guns firing forward. I believe the backside says there were 16 fixed position guns firing forward but I believe that includes the top turret firing forward.
The nose on this could be changed to the traditional glass nose with a bombardier position in about three hours. It was a modular aircraft, no two seem to look alike.
Another nifty feature of this plane are the remote controlled turrets. I have never seen one that still has the bottom turret. Unlike the B-17s and other more famous planes these do not get the full restoration treatment.