decision as to what they provide the police. >> reporter: after hours after analysis, fredericks questions whether lowdnes schools provided all of the video. >> there is a hole of time where none of the cameras provide any record that i've been provided. >> reporter: fredericks has all the camera angles and all the video released by the sheriff's office. >> there are four cameras in the gym that records motion from when the lights turn on in the morning until when the lights are turned off at night, except for the area of interest. >> reporter: the moments before kendrick johnson enters the gym, look at what happens to the recordings from these four cameras in the gym. the time is recorded with the video. the first camera captures images from the start of the day until 12:04 p.m. then nothing. it picks up again at 1:09 p.m. there is consistent surveillance from the second camera until 11:05 a.m., then it stops and