Boeing E-6 Mercury
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d0/E-6B_TACAMO_Climb.jpg/220px-E-6B_TACAMO_Climb.jpg)
The Boeing E-6 Mercury is a U.S. military aircraft. It is used by the US Navy as airborne headquarters and a communication aircraft. It is the biggest aircraft of the U.S. Navy. Boeing E-6 Mercury is a military variant of the Boeing 707 airliner.