A heavy vehicle that was carrying four U.S. Army soldiers remained submerged in a swamp in Lithuania on Thursday, two days after the soldiers were reported missing after they did not return from a training missionssvip, the U.S. military said.

The vehicle was discovered on Wednesday after a search by the U.S. Army, the Lithuanian military and other Lithuanian authorities, the U.S. military said. The soldiers still had not been found on Thursday because the Army was struggling to extract the vehicle from the mud.

“The challenges presented by the water, thick mud and soft ground around the site have complicated recovery efforts and have required specialized equipment to drain water from the side and stabilize the ground,” the Army said in a statement on Thursday.

Engineers on the site were building berms — barriers made of dirt and sand — to create a contained area from which water could be pumped and mud dredged, allowing emergency workers to access the vehicle, the Army said.

“Due to the terrain, this is an incredibly complex engineering effort,” Maj. Robin Bruce, a 1st Armored Division engineer, said in the Army statement. She added, “The team is exploring every available option to speed up this process.”

The soldiers, from the First Brigade, Third Infantry Division,ijogo slots were training near Pabrade, a city in eastern Lithuania near the border with Belarus, early Tuesday, the U.S. military said.

“He brings steady, strategic insight, as well as a proven ability to inspire and guide dynamic teams to great achievement,” Elizabeth M. Eveillard, the board chairwoman, said of Rüger, in a statement. “As we prepare to embark on a new era for the Frick, I am confident in his ability to steer us well.”

A lyric soprano known for her clear, supple voice, Ms. Amara sang 748 performances with the Met between 1950 and 1991, an impressively long tenure.

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