"During the Mission Status briefing, Lead Flight Director Tony Ceccacci noted that during the camera survey of the equipment in the payload bay, the team noticed some fine particulate matter around the box containing the Wide Field Camera 3 and asked the crew to take additional images using a higher resolution camera for the ground teams to assess.Cain later confirmed that the dust was not present prior to launch, and was most likely particulate shaken loose from the thick insulation blankets inside the payload bay during launch.