Nasa enjoys visiting Hamachi when she's working. Even when he's working, their careers tend to cross paths. There's always time for private meetings to improve company relations when the clients aren't around.

Nasa and Hamachi are Mine
Original Art by

Edit (4-1-19): I feel I should add that Hamachi and Nasa both work as private security. however Hamachi's company provides a more "professional" style of Security Service while Nasa's is more along the lines of field or Private Military type.