Kevin Rodríguez, now back in Venezuela, said the uncertainty of not knowing how long he would be in the U.S. military facility was what worried him the most.

The base had been cleared of migrants since Thursday, after the government sent 177 to Venezuela and one back to the United States.

The number of troops being sent to Guantanamo Bay, Cuba, in support of migrant detention operations there continues to swell, with approximately 1,100 service members now deployed to the Navy base.

The administration flew almost all of the migrants it had held in the facility in Cuba to Honduras, and one to detention in the U.S., NBC News has learned.

The Trump administration recently made headlines by transferring a group of migrants to the controversial U.S. base at Guantánamo Bay, Cuba. This move comes