Probing flights by some fighters and bombers were carried out from 8–18 December to draw out the Portuguese Air Force, but to no avail.[27] On 18 December, two waves of Canberra bombers bombed the runway of Dabolim airfield taking care not to bomb the Terminals and the ATC tower. Two Portuguese transport aircraft (a Super Constellation and a DC-6) found on the airfield were left alone so that they could be captured intact.