ABC News 
March 29, 2011
One week after an international military coalition intervened in Libya , the cost to U.S. taxpayers has reached at least $600 million, according figures provided by the Pentagon.
U.S. ships and submarines in the Mediterranean have unleashed at least 191 Tomahawk cruise missiles  from their arsenals to the tune of $268.8 million, the Pentagon said.
U.S. warplanes have dropped 455 precision guided bombs, costing tens of thousands of dollars each.
A downed  Air Force F-15E fighter jet will cost more than $60 million to replace.
And operation of the war craft, guzzling ever-expensive fuel to maintain their positions off the Libyan coast and in the skies above, could reach millions of dollars a week, experts say.