U.S. Marines climb a stairway and prepare to clear a ship while conducting a joint visit, board, search, and seizure exercise during composite training unit exercise, or COMPTUEX, in the Atlantic Ocean, July 20, 2015. U.S. Marines climb a stairway and prepare to clear a ship while conducting a joint visit, board, search, and seizure exercise during composite training unit exercise, or COMPTUEX, in the Atlantic Ocean, July 20, 2015. SHARE IMAGE: Download Image: Full Size (1.89532 MB) Tags: Photo Essays Photo By: VIRIN: 622775-U-WJO24-739.jpg Photo Gallery