"We did a lot of work 30 to 40 years ago, but now we see this as a second phase of growth, " says Patrick Fitzgibbon, who leads Africa development for Hilton.

WSJ: Hoteliers Race to Expand in Africa

Cartwright has described that system, now entering its second study phase, as a key component in transforming the aging Cold War nuclear weapons stockpile.

CENTERFORSECURITYPOLICY: STRATCOM: Safe, reliable deterrence critical