investigators say the 17-year-old died. look carefully. there he is. in the white t-shirt and jeans carrying a yellow folder. the johnsons now have this video as the result of a lawsuit. cnn filed its own motion to get access to all of the video. investigators in lounds county, georgia, told the johnsons and their attorneys johnson reached into this gym mat for a shoe, and it was an accident. >> they know their child did not climb into a wrestling mat, get stuck, and die. where is that video? >> reporter: the sheriff's office says that moment was not recorded. the johnsons also question moments in the surveillance video like this one. kendrick is seen running in the gym, and then another image appears showing other students. it jumps from one moment to another. the johnsons' attorney say they can't tell from the surveillance video what happened to kendrick, and when the other students entered. >> we don't have any time code with which to synchronize the