Definition Of aide
an assistant to an important person, especially a political leader.
Example Of aide
a presidential aide
Although he plays down his army service, he was an aide to Field Marshal Montgomery.
An aide later found it crumpled in the general's shirt pocket.
An aide to generals during World War II, he learned to command by watching them in action.
As for the pace of this preparation, the aides are saying the president is comfortable with him.