Considering that one person is a moderator of these forums and another has a significant, non lie-filled post history I will take them at their word. This isn't a political platform or the matrix. We don't have to question everything.
Also, eye witness testiomnies are used in a court of law even if there isn't video evidence available. The legal system may not be perfect, but I would assume if governments approve their use I am no wiser to question their validity as a source.