Early film crew members were often off-duty sailors or longshoremen, a large source of group labor in the U.S. at the turn of the 20th century.

FORBES: Hollywood Hard Hats

All 300 passengers and crew onboard the Christmas Day flight have been interviewed by authorities, the source said, adding that he expected no one else to be held or charged in connection with the incident.

CNN: Online poster appears to be Christmas Day bomb suspect