U.S. Customs and Border Protection (CBP) Air agents helped a 18-year-old and a 3-year-old after they were seen disoriented in dense brush near the river.
CBPS said the two crossed on a raft into the US near the small town of Cuevitas.
They were provided guidance and water, according to CBP.
Agents gave the teen and girl verbal directions on how to escape the brush.
They walked 300 yards before arriving on a road where crews landed to assist the two.
That TMs when an agent from the helicopter stepped out and performed a health and safety check on the 3 and 18-year-olds.
They were then turned over to Border Patrol.
The McAllen Air Branch is part of the South Texas Campaign, which leverages federal, state and local resources to combat transnational criminal organization, according to CBP.