A law enforcement army. Lines of vans, clusters of foot patrols, pairs of horses etc…Waiting in the wings, in reserve, further detachments. Resting, eating, texting, sleeping, staring out of the window of their vehicles. In anticipation, scanning the proverbial horizon until the dusk descends, the state visit concludes and evening rush hour sweeps away all trace of the ‘thick fluorescent line’ (fka the ‘thin blue line’).