Heartbreaking moment when fallen soldier's widow weeps over casket

Sgt. La David Johnson was killed in Niger.

— -- A heartbreaking moment unfolded on the tarmac of a Florida airport Tuesday when the widow of a fallen soldier received her husband's casket.

Footage of the moment shows a pregnant Myeshia Johnson weeping as she leaned over the flag-covered casket.

She was accompanied by the couple's 6-year-old daughter, who is seen standing by her mother's side as Myeshia Johnson sobs for several minutes.

According to local ABC affiliate WPLG, the casket was transported from Miami International Airport on an interstate closed to other traffic. WPLG reported that police officers and firefighters saluted the vehicle along the route to the funeral home in Hollywood, Florida.

Johnson was one of four soldiers killed in Niger when a joint patrol of U.S. and Nigerien forces was ambushed Oct. 4 by militants believed to be linked to ISIS. He was supporting a Green Beret unit on the mission.