The A-26 armor was an original feature of all A-26s. It is made
of a hardened Duralumin product that was originally designed to stop a .50 cal bullet at 500 yds.
It surrounded the cockpit, it ran along the sides to protect
the control cables and it covered the bottom of the fuel tanks between the fuselage and nacelles. There are also armored access
doors on the bottom of each nacelle.
Some of armor panels are removalable on sides of cockpit. Some
is built into the frame, around back of cockpit from above wing to wing behind cockpit. There was also some under floor as
well, inside nose wheel well, forward of instrument panel in nose section.