A Pentagon investigation into the October bombing of a Doctors Without Borders hospital in Kunduz, Afghanistan, found the airstrikes to be the result of “human error.” The Pentagon has resisted calls for an independent investigation by an outside group into the Oct. 3 airstrikes that killed 30 Doctors Without Borders staff members and patients. On Wednesday, the military announced the conclusion of its own review of the incident. “The report determined that the strike on the trauma center in Kunduz city, Afghanistan, was the direct result of human error compounded by systems and procedural failures,” Gen. John F. Campbell, the commander of U.S. forces in Afghanistan, said during a press briefing at the Pentagon.