To ask the Scottish Government, further to the answer to the sixth supplementary to question S5F-02160 by Nicola Sturgeon on 22 March 2018 (Official Report, c. 17), regarding the introduction of parking charges at Sumburgh, Kirkwall and Stornoway airports, what its response is to the comment by the managing director of Highlands and Islands Airports Ltd (HIAL) in the Shetland News on 23 March that HIAL was "in a difficult position, because we had to go through a number of hoops with the Scottish Government before we announced the charges", and whether it can confirm what these so-called hoops were.