The first thing you notice while sitting in the upper tiers of Arthur Ashe Stadium is the noise. A persistent exterior hum filters up from ground level, fed by the massive ventilation and cooling units that sit outside the stadium, the clack of the Long Island Rail Road to the north, and the forklifts receiving goods from the refrigerator trucks that keep the USTA Billie Jean King National Tennis Center flush with its essential supplies of Evian, champagne, and premium IPA. Overhead, planes descending toward LaGuardia airport ensure the auditory assault takes place by land and air simultaneously. In the lower rakes of the stadium, the babble of the spectators is incessant; it’s not unusual to overhear full-volume conversations on various non-tennis topics – work, family, romance, last night’s dinner – that continue without interruption for the duration of an entire match.