Vanderhorst said the pilot never came over to them and at no time was their son running around, causing a disturbance. He also said their son has flown with them dozens of times in the past without any problems. They believe the only difference is, this time they upgraded to first class."I think the pilot was concerned that my son was going to be in first class and I believe the pilot felt that my type of son, my disabled down syndrome son should not be in first class," said Vanderhorst.