An LPR is required to present an I-551 (Green Card) for reentry into the U.S. If you are not a U.S. citizen or a U.S. LPR, you will need a passport and/or the appropriate documentation based on the status you are seeking in the U.S. for any type of cruise, closed loop or not.
The Picard Maneuver is a battle tactic invented by Starfleet Captain Jean-Luc Picard. In 2355, Picard was in command of the USS Stargazer when it was attacked by an unknown alien vessel, later determined to be of Ferengi origin.
You may encounter Enterprise crew members who've already been assimilated. Don't hesitate to fire...believe me, you'll be doing them a favor. . â Jean-Luc Picard, 2063 (Star Trek: First Contact). Assimilation was the process by which the Borg added new members and new technology to the Collective.