Since chest tubes have been routinely used to drain the pleural space, particularly after lung surgery, the management of chest tubes is considered to be essential for the thoracic surgeon. The pleural drainage system requires effective drainage, suction, and water-sealing.
1 The Passport Card can be used on cruises to the Caribbean and Bermuda, in addition to land border crossings to Canada and Mexico.  The US State Department started accepting applications for the Passport Card on February 1st, 2008.
There are very important differences between the passport card and the passport book. The passport card is ONLY for land and sea travel, which means there is no way travelers can use the passport card to board a plane. Air travel is prohibited with the passport card. However, the passport book is valid for all forms of travel: land, sea, AND air. The passport card is commonly requested by travelers that are planning to go on a cruise. Even closed loop cruises often require passengers to have a valid passport. While the passport card is permissible for a cruise, you may want to reconsider getting the card over the book.