The U.S. told them terrorists killed their brother. It was a lie they held for years

https://www.npr.org/2023/05/28/ [login to see] /fallujah-iraq-marines-friendly-fire
"We've been investigating a horrible incident from April 2004 that killed two Marines and an Iraqi man when a mortar was accidentally dropped on a schoolhouse in Fallujah.

The Marines knew almost immediately it was an accidental case of "friendly fire" — the deadliest such Marine-on-Marine attack in decades — and they opened an investigation. But the families of the dead Marines were told it was enemy fire and didn't get the truth for three years. It seems the son of a prominent politician — Marine 1st Lt. Duncan D. Hunter — was involved in the mishap. His father, Duncan L. Hunter, was chairman of the powerful House Armed Services Committee at the time. Rather than tell the truth, the Marine Corps buried the report of its investigation for years".