Disturbing new footage shows the moment a hero National Guard member opened fire on the suspected Afghan terrorist — just moments after the alleged gunman ambushed two troops in a broad daylight attack.

The suspect, Rahmanullah Lakanwal , could be seen brazenly wielding his gun as he fired rounds at the National Guard members in Washington, DC, on Thanksgiving eve, according to a clip obtained by the Wall Street Journal .

At one point, a male guard can be seen running down the street as he frantically tries to reload his own weapon.

Moments later, images captured by a witness showed the two guards — Sarah Beckstrom, 20 , and Andrew Wolfe, 24 — slumped over on the street.

Beckstrom died of her injuries on Thursday night, while Wolfe is still clinging to life.

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