Washington — The U.S. Army Reserve is examining whether it can provide the military's Southern Command with police forces, medical personnel and other support units within the next four months, according to an internal Army message reviewed by CBS News.

Though the message makes no reference to Cuba, the request is for continued military planning aimed at Cuba, according to multiple U.S. officials who spoke to CBS News under condition of anonymity because they were not authorized to speak publicly.

There is no indication in the document that any units have received deployment orders. But the planning comes as the Trump administration puts intense economic pressure on Cuba and urges the island nation to mak...