 Cochrane’s main-force crews would bomb on the markers unless or until the raid controller decided that the markers were off-target or obscured, in which case time-and-distance bombing would be used.The operation was now ‘on call’ for the next moon period, a matter of days away.On the morning of Wednesday 16 June, four Pathfinder crews of No.97 (Straits Settlements) Squadron at RAF Bourn, Cambridgeshire, were detailed to ‘take a week’s kit, and fly up to Scampton directly after lunch.’ When one pilot asked why, his flight commander said, ‘I don’t know.