Supreme Court Justice Antonin Scalia dead at 79
GOP debate: Contenders say no court nominee for Obama
Columbine shooter's mother says she thinks of victims daily
Einstein's right again: Scientists detect ripples in gravity
Clinton, Sanders clash over Obama in debate
Cruz app data collection helps campaign read minds of voters
Bush emphasizes high-tech approach
CHARLESTON, S.C. -- President Bush told America's next generation of warriors it will take a high-tech military and old-fashioned spies "to save our children from a future of fear" like the horror of the September morning remembered Tuesday around the globe.
In a speech to uniformed military cadets at the Citadel, Bush emphasized how smart bombs, missile defenses and unmanned spy craft are necessary to crush the kind of terrorists who attacked the United States three months ago and threaten the nation still.
Retooling the armed forces while they are at war with terrorists in Afghanistan "is like overhauling a car engine while you're going at 80 miles an hour," Bush said.
"Yet we have no other choice."
The president flew here from a somber White House ceremony where the drum roll of a Marine band touched off strains of America's national anthem that reverberated from Albuquerque to London to outer space, marking the precise moment on Sept. 11 when the terrorists' first hijacked plane struck in New York.
The country needs no stone monument to that horrific instant, Bush said at his wife's side in the East Room.
"For those of us who lived through these events, the only marker we'll ever need is the tick of a clock on the 46th minute on the 8th hour of the 11th day."
Spoke there in 1999
He sounded a note of vindication as he returned to the site of his most prominent campaign speech on national security two years ago.
"I said here at the Citadel ... America was entering a period of consequences that would be defined by the threat of terrorism, and that we faced the challenge of military transformation," Bush told some 2,000 cadets whose white gloves muffled their applause.
"That threat has now revealed itself, and that challenge is now the military and moral necessity of our time."
Borrowing heavily from the text of that September 1999 address, Bush said a "revolution in our military" is needed to defeat terrorism.
The battlefields in Afghan-istan have offered a proving ground for new tactics and new technologies, Bush said. Green Beret and Delta Force operatives on horseback call in airstrike coordinates "in the first cavalry charge of the 21st century."
The United States must rebuild its network of human spies -- "the people who find the targets, follow our enemies and help us disrupt their evil plans" -- and invest in more sophisticated weapon systems like the unmanned, missile-armed Predator surveillance plane.