A high-ranking IDF officer was killed Killing and another wounded Bodily_harm , when LAF snipers opened Action fire on an Israeli observation Perception_active post after receiving Receiving authorization from senior Lebanese commanders .

The cause of the accident Catastrophe was determined Deciding to be a human error on behalf of the driver of the train from Leuven , who passed Motion_directional a red signal without authorization .

In response , the Gulf of Tonkin Resolution gave Giving President Lyndon B. Johnson broad authorization to increase U.S. military presence , deploying ground combat units for the first time and increasing troop levels to 184,000 .