On September 15, 1997, the Shayetet 13 Naval Commandos sent an assault team to conduct a raid in Lebanon. The team encountered an improvised explosive device (IED) and was ambushed by Hezbollah in what has subsequently been called the Ansariya Ambush. 13 of the naval commandos were killed and 3 were injured. Unit 669 responded by sending a team to evacuate the injured commando team, while taking heavy enemy fire. For bravery and performance under fire the 669 team received a formal citation.