Rick Leventhal updated us this morning on a story we've followed throughout this year. The family of a fallen U.S. Marine is suing the Defense Department and Marine Corps over their son's death in a 2012 insider attack in Afghanistan. 

Afghan Teen Murders 3 U.S. Marines, Gets 7.5-Year Sentence

Lance Cpl. Gregory Buckley Jr., 21, was killed along with two of his comrades when an Afghan teen opened fire in a gym on their base.

The Buckley family has previously alleged that military officials have been trying to cover up the details of the murder. 

The 17-year-old was convicted in Afghan court, but only received a seven-year sentence for the triple murder because he was tried as a minor over the family's objections.

The lawsuit, however, doesn't seek a financial settlement. The Buckley family says they just want the facts behind the murder, which they're entitled to under federal law. 

"I want them to admit that they were wrong and I want someone to be held responsible for my son's death," Gregory Buckley Sr. told Leventhal.

Buckley's father has recalled that his son expressed concern about Afghans working on the base, namely an unsavory police chief. 

Sarwar Jan was allowed on the base despite warnings about his suspected dealings with the Taliban and that he was paying young "tea boys" to work as sex slaves. 

Leventhal reported that it was one of these so-called "tea boys" that murdered the three Marines.

The Marine Corps declined to comment to Leventhal on the pending litigation.

Lawsuit: Marine Corps Covered Up Details of Deadly Insider Attack

Lea Gabrielle and Pete Hegseth, both veterans who served in Afghanistan, discussed the lawsuit on "America's Newsroom" this morning. 

Hegseth said Jan was clearly an "unsavory character" but he said that in Afghanistan, that wouldn't be out of the ordinary. 

"What looks like blatant corruption to us is actually business as usual in many ways for the Afghans and it leads you to work with a lot of unsavory characters," he said.

Hegseth said the most frustrating part is that there was actionable intelligence given to the Marine unit on the ground about Jan, but the proper measures were not taken in response.

Hegseth noted that instead of being forthcoming about the attack, the Marine Corps is actually prosecuting a Marine whistleblower for using his personal email to send warnings about Jan to the troops on the ground.

Watch the full report above.