It was C-40A CNV7642

C-40A，客貨兩用。載客70人，貨另外。

The C-40B is designed to be an "office
in the sky" for senior military and government leaders.  Communications are
paramount aboard the C-40B which provides broadband data/video transmit and
receive capability as well as clear and secure voice and data communication.
 It gives combatant
commanders the ability to conduct business anywhere around the world
using on-board internet and local area network connections, improved
telephones, satellites, television monitors, and facsimile and copy machines.
The C-40B also has a computer-based passenger data system. 

The C-40B's primary customers are the combatant commanders, and the C-40C customers include members of the Cabinet and Congress.