The most controversial part of the plan was the involvement of Sea Harriers from Woodward's task force. One of the reasons for the use of the Vulcans was to conserve Sea Harrier resources for the air defence of the naval forces, but the plan required them to conduct a daylight photo reconnaissance sortie over the airfield for the purpose of damage assessment. If they had to be risked, then there were political advantages in using them to carry out the attack on the airport instead. Rear Admiral Derek Reffell proposed that Harriers be used to suppress the airfield radars prior to the Vulcan attack in addition to conducting the post-attack photo reconnaissance. On 29 April, Woodward was informed that the Black Buck raid would occur at 0700Z, and that he was to arrange for the photo reconnaissance to take place as soon as possible afterwards. Woodward signalled that if the photo reconnaissance was essential to Black Buck, then his recommendation was that Black Buck should be cancelled. The following day he was informed that Black Buck had been approved, and that the photo reconnaissance was required not just for damage assessment, but to refute Argentine allegations of indiscriminate bombing.