I stop st the PHX airport location (terminal 4, near gate A14) every time I have a flight out of this concourse. The staff is consistently friendly and personable. It can't just be a random thing. I have to believe it goes deeper and is a result of management. Guessing the training and hiring practices, combined with leading by example, is why the staff here always seem like they enjoy their jobs. And the interactions certainly put a smile on my face. Can't recommend enough - stop by the next time you're flying out of Concourse A, gates 1-14.