Dec. 4 (UPI) -- Adm. Mitch Bradley , the military leader the White House said ordered the second strike on a suspected drug-trafficking boat in the Caribbean Sea, is expected to brief Congress Thursday on the incident in which two survivors of the initial attack on the boat were killed. Unnamed sources familiar with the planned briefing told ABC News and CNN the briefing will take place as part of a bipartisan inquiry into the Sept. 2 strikes on the boat. Sen. Jack Reed , the ranking Democrat