Amid the continuing imprisonment in Mexico of a U.S. Marine, another apparent miscarriage of justice is being called out by the families of three Marines who were killed in an insider attack in Afghanistan. The attacker has been sentenced to just 7.5 years in prison by an Afghan court.

Chris Kyle's Ex-Roommate Reacts to Jaw-Dropping Jesse Ventura Court Win

NY Times Op-Ed Links Returning Vets With White Supremacists

Staff Sgt. Scott E. Dickinson, 29, Cpl. Richard A. Rivera, 20, and Lance Cpl. Gregory T. Buckley Jr., 21, were fatally shot, while a fourth Marine was wounded, when the Afghan teen opened fire at their base in Aug. 2012. The teen was being trained by the Marines to join the Afghan police force.

Buckley Jr. was just days away from coming home for a surprise visit. At the time of the murder, his father tearfully recalled that his son had referred to the Afghans in training as "shady" and didn't want to be there with them.

Greg Buckley Sr. was originally told by the Marines that the Afghan teen, Ainuddin Khudairaham, would be tried as an adult and most likely receive the death penalty. But that changed when the court decided to try the 17-year-old as a juvenile, meaning last week's 7.5-year sentence was the maximum penalty.

Buckley Sr. sat down with Brian Kilmeade, who noted that if one of the Marines had killed three innocent Afghans in cold blood, they'd be in "Leavenworth for life."

Buckley said he was eager to pay his own way to go to Afghanistan for the trial, but heard nothing from the Marines about the case until the sentence had already been handed down.

In a letter after the sentence was announced, the family said they felt “misled, abandoned and betrayed” because the Marines knew about the trial, but failed to tell them about it.

"They should have came to us, they should have told us what they were doing. My family has been after them every day, asking questions and they keep on stonewalling us every time we ask something," he said, arguing the U.S. government should have been working to bring the killer here to be tried for the murders.

"He'll be out in four years because he already served two, but I'll never have my son back again. ... I'm just trying to find the right answers. I'm just looking for help," said Buckley.

Kilmeade called on the Marine leadership to "step up" and reach out to discuss the situation, adding that there seems to also be a lack of urgency by the government in the case of the Marine being held in Mexico.

Watch the emotional interview above.

Bowe Bergdahl Gets Military Desk Job, May Get $350K in Back Pay

DOD Sends 'Pink Slip' Letters to Soldiers Fighting in Afghanistan

U.S. Soldier Gets 20 Years for Afghan Battlefield Shooting

Yesterday on the show, Lt. Col. Allen West (Ret.) reacted, calling it "heinous" for the Afghan teen to be tried as a juvenile.

West pointed to "a powder keg" developing in the military community when you consider the anger over the Marine jailed in Mexico, the VA scandal, "pink slip" letters for soldiers overseas, and the Bowe Bergdahl prisoner swap.