Officer Burnett then took the dog off the aircraft, down the jetway, and secured it inside the car. As he recovered them, he placed each of them back on the galley counter he had used near the beginning of his exercise. He estimated this activity took him 15 minutes. Acccording to Officer Burnett, he did not see a single crew member, maintenance person, cleaning person, catering service personnel, or passenger in his exercise. The graphic above compares the reported locations of explosives residues found on TWA Flight 800 recovered wreckage with the places aboard the aircraft where Officer Burnett told the FBI he had placed his canine exercise explosives samples.
Chemicals can get on airplanes through other means.
Later, however, the FBI clearly used the statements of Officer Burnett as its explanation for the presence of explosives residues on TWA Flight 800. The residue collected after the explosion of Flight 800 was consistent with the explosives utilized during the exercise.