Ruby Ridge(Wiki)

During the USMS reconnoiter of the Weaver property, six U.S. Marshals encountered Harris and Weaver's 14-year-old son, Sammy, in woods near the family cabin. A shootout took place. Deputy U.S. Marshal William Francis Degan, Sammy Weaver, and the Weavers' dog, Striker, all died as a result. In the subsequent siege of the Weaver residence, led by the FBI, Weaver's wife Vicki was killed by FBI sniper fire. All casualties occurred in the first two days of the operation. The siege and standoff were ultimately resolved by civilian negotiators. Harris surrendered and was arrested on August 30, while Weaver and his three daughters surrendered the next day.

https://en.wikipedia.org/wiki/Ruby_Ridge