german aircraft aproaching british coast 

Pencil?

a Flaktower in Berlin (maybe Zoo)

notice the 12,8 cm twin Guns at the Top and the smaller flak guns  at the sides

Berlin Flaktower

Messerschmitt Bf 110C-4 over the English Channel.  Photo was taken from the rear gunner of another plane in the formation.  The first 110C had a DB-601A-1 engine and came into service January 1939.  The later C-4 modification added about 500 lbs. of crew armor. The C-4/B model was fitted with an ETC-250 bomb rack under the fuselage, which allowed the carriage of two 250 kg. bombs. To offset the additional drag, the more powerful DB-601N engine was used in place of the DB-601A.
Original Color--hartyattack