The US military carried out a follow-up strike on a suspected drug vessel operating in the Caribbean on September 2 after an initial attack did not kill everyone on board, sources familiar with the matter told CNN. That September strike was the first in what became a regular series of attacks on alleged drug boats. While the first strike appeared to disable the boat and cause deaths, the military assessed there were survivors, according to the sources. The second attack killed the remaining crew on board, bringing the total death toll to 11, and sunk the ship.