American airports have become a symbol of government dysfunction, and the spring travel season is just around the corner.

The Pentagon has identified the six United States service members who died last week when a refueling aircraft crashed in Iraq. With their deaths, the total number of service members killed in the war with Iran has risen to at least 13.

Six crew members died after a military refueling plane crashed in Iraq on Thursday, the U.S. Central Command said. Officials said the crash was not caused by hostile or friendly fire.

The concrete runway barrier played a key role in a disaster that killed 179 people. An audit revealed officials skimped on construction fees and then falsified records.