[Finalapproach29er]

We need a 747 to make a secure conversation?

That's crazy. The SecDef perhaps deserves to travel in a 747, but not for that reason. IMO

[panamagringo]

Perhaps a better way of looking at it:

1) Secure plane
2) Secure communications
3) Logistical support for SecDef's staff and the Press if allowed on the plane.
4) Impress the natives on the opposite side of the world.

Not necessarily in that order...