VIDEO - The president's aircraft on Tuesday paid a training visit to Dover AFB.

Dover area residents are used to seeing C-5M and C-17 and other aircraft flying in an out of Dover Air Force Base, but it’s quite a sight to see the official plane of the President of the United States in the skies over Kent County.

The plane, known in Air Force nomenclature a VC-25A, is one of two customized Boeing 747-200B aircraft used by the president. The call sign for the aircraft is Special Air Mission (SAM) 28000 and SAM 29000, depending on which VC-25A is used.

But those numbers are used when the president is not aboard. While carrying the chief executive, it is known as Air Force One.

Both aircraft are based at Andrews Air Force Base, outside Washington, D.C., but regularly use the Delaware airspace for pilot training.