A  U.S. Marine Corps sniper was moved to tears as he recounted how his warnings about a potential suicide bomber were ignored by leaders just minutes before the deadly blast at Kabul airport during the American withdrawal from Afghanistan.

Sgt. Tyler Vargas-Andrews, a Marine sniper who served in Afghanistan during the American withdrawal, recounted the ordeal in testimony before the House Foreign Affairs Committee Wednesday, telling members about the moment he and a friend were hit with a "flash and massive wave of pressure" after a suicide bomb detonated at Kabul airport on Aug. 26, 2021.

"I'm thrown 12 feet onto the ground but instantly knew what happened. I opened my eyes to Marines dead or unconscious and lying around me. A crowd of hundreds immediately vanished in front of me and my body was catastrophically wounded with 100 to 150 ball bearings now in it," Vargas-Andrews told the committee through tears.

Moments before the blast, he and his fellow Marines were providing security from a tower near the gate where the blast occurred. Armed with intelligence about a potential suicide bomber, Vargas-Andrews and those with him spotted an individual matching the suicide bomber's description. The Marines observed as the man engaged in suspicious behavior and sent urgent warnings to leaders asking for permission to engage the suspected bomber.

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Marine sniper Tyler Vargas-Andrews congressional testimony e congressional Afghanistan hearing

Marine Sgt. Tyler Vargas-Andrews breaks down while testifying before the House Foreign Affairs Committee. (Fox News)

"Over the communication network we passed that there was a potential threat and that there an IED attack imminent, this was as serious as it could get. I request engagement authority while my team leader was ready on the M110 semi-automatic sniper system. The response, leadership did not have engagement authority for us, do not engage," Vargas-Andrews recounted.

The Marines asked for their battalion commandeer to come to the tower as psychological operations confirmed the individual met the description of the suspected bomber. They presented the commander their evidence while assuring him of the "ease of fire" on the suspect and asked for authority to shoot, but were never given permission. 

"Plain and simple, we were ignored. Our expertise was disregarded, no one was held accountable for our safety," Vargas-Andrews said.

The team soon left their position on a mission to find allies on the ground among the crowd when they were hit with the suicide blast, which led to the deaths of 13 U.S. service members.

cargo plan leaving Kabul airport

A U.S. Air Force aircraft takes off from the airport in Kabul on Aug. 30, 2021. (Aamir Qureshi/AFP via Getty Images)

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Vargas-Andrews, who was appearing in front of the committee in a personal capacity and not as a representative of the U.S. Marine Corps or the Department of Defense, is one of several individuals testifying about the chaotic final days of the U.S. war in Afghanistan.

"Nobody wanted my report post-blast. Even NCIS and the FBI failed to interview me."

The hearings are the first on the subject since Republicans took control of Congress earlier this year, with Rep. Cory Mills, R-Fla., telling Fox News Digital Tuesday that the proceedings will be aimed at providing the "transparency and accountability the American people deserve."

Chairman Michael McCaul, R-Texas, started out the hearing thanking Vargas-Andrews for his bravery and service. 

"Sergeant Vargas-Andrews, a sniper at Abbey Gate, was gravely injured in the terrorist attack there. He has undergone 44 surgeries, and has lost both his leg and his arm, as well as his kidney. Thank you, sir for the courage to be here today."

Marine Sgt. Tyler Vargas-Andrews speaking into microphone at congressional hearing

Marine Sgt. Tyler Vargas-Andrews recounted how his warnings about a potential suicide bomber were ignored by leaders just minutes before the deadly blast at Kabul airport. (Fox News)

"I think these 13 Gold Star families deserve to know who was responsible for the loss of life. I think that the Americans who are left behind to perish without our own U.S. government's obligated duties to provide safety and security to them need to have transparency," Mills said. "We need to know where the decisions were being made, whether it was ignoring military strategy by the president. Whether it was failed strategies by both the DOD and the Department of State, whether it was not being properly carried out by the ground commanders… we get the necessary information to be able to take further steps and lessons learned."

Vargas-Andrews said he personally observed some of those failures, including slow processing speed by State Department personnel.

Marine takes baby over barbed wire fence at Kabul airport

A U.S. Marine grabs an infant over a fence topped with concertina wire during the evacuation at Hamid Karzai International Airport in Kabul on Aug. 19, 2021. (Omar Haidiri/AFP via Getty Images)

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"The troops on the ground had to tirelessly work to control the crowds, day and night. The Department of State staff at HKIA (Hamid Karzai International Airport) would completely shut down processing Afghans every evening and into the morning, leaving ground forces with a nightmare," he said. "State was not prepared to be in HKIA."

Despite the disastrous events, the Marine testified that he was not asked to provide his report after the blast and stressed the need for accountability in the aftermath.

"Nobody wanted my report post-blast. Even NCIS and the FBI failed to interview me," Vargas-Andrews said.

"Our military members and our veterans deserve our best because that is what we give to America," he continued. "The withdrawal was a catastrophe in my opinion and there was an inexcusable lack of accountability and negligence. The 11 Marines, one sailor, and one solider who were murdered that day have not been answered for."