We're the Only Ones Mysterious Enough

 Denver’s Top Parking Enforcer ‘Fixed’ 21 Of His Own Tickets - Jonathan Featherston Says It Was Part of Secret 'Mystery Shop' Campaign [More]

And the only other person who knew it was his direct supervisor, with no record of the chief and/or his direct reports being informed and approving it, no correspondence or documentation defining the program, its parameters, its duration, no audit forms and reports...?

Because he was "test[ing] the integrity" of others, you see. 

[Via Michael G]