He saw them before the couple was on White House property. The version I read before made it sound like they were all in one vehicle when he saw them. This one sounds like the make-up and camera people were in a vehicle ("a make-up woman got out and fixed the woman's hair and started powdering the man's forehead"), and that the couple had already gotten out of either the same vehicle or a different vehicle. Either way, the camera and make-up people were not seen accompanying them onto White House grounds much less into the White House.