If was a incident that happens in Boston Massachusetts on March 1770 a British soldier was shot and killed the people fight
Analyzing and breaking coded messages
electronic surveillance
analyzing data from spy satellites
But I mean your security so it could be multiple things
Answer: The US was concerned about the spread of communism in these regions. Thus, they US started to prepare in case of a attack as well as infulence these areas to become democrate states.
Explanation: Areas like Cuba (Right on the US's Door step) are good areas to directly attack the US.