Bad weather caused the six aircraft in the raid to become separated. Kenneth Campbell arrived at the grouping point off the harbour alone and, after waiting for any other aircraft to arrive, launched a single aircraft attack against the target knowing that the defences had not been eliminated. He flew directly into one of the most heavily defended targets in the whole of europe, encircled with up to one thousand anti-aircraft and other guns.
Sergeant Hannah succeeded in forcing his way through the fire in order to grab two extinguishers. He then discovered that the Rear Gunner was missing. Quite undaunted he fought the fire for 10 minutes, and when the fire extinguishers were exhausted he beat the flames with his log book. During this time, ammunition from the gunner’s magazines was exploding in all directions. In spite of this and the fact that he was almost blinded by the intense heat and fumes, he succeeded in controlling and eventually putting out the fire. During the process of fighting the flames, he had turned on his oxygen to assist him in his efforts.