This was brought up in another forum -
Norwegian could be looking in to syphoning pilots from the many Miami area secondary cargo airlines such as Centurion, Amerijet, SkyLease, or Florida West. These airlines pay less than Norwegian for wide body cargo flying. The chance to do some "more prestigious" flying on brand new 787s for a bit more pay could be very tempting to those guys, especially if they already live in south Florida.