W/O Bill Wade, the Mid-upper gunner, and Sgt Doug Skingle, Mid-under gunner, of the P/O H. McKinley crew of 408 Squadron, exit
Lancaster II DS-707 coded EQ-C after completing their seventh operation, the day after D-Day. 

Just behind the bulged bomb bay doors one can see the .50 caliber barrel protruding from the mid-under gun position.
This gun position was rarely seen on Lancaster IIs of 408 Squadron.

Photo courtesy of Canadian Forces Photo Unit