fired at libyan defenses costs $1.4 million and so far, some 160 tomahawk missiles were launched, mostly by the u.s., adding up to $225 million. and that's just a slice of the no-fly zone expense to the american taxpayer. >> it gets down to how many naval ships have we got in the region? how many aircraft are flying off those ships? what additional military may be deployed to that theater? >> reporter: a leading estimate put the startup cost to military action between 400 and $800 million and the price of maintaining not fly zone, 30 to $100 million per week. fuel alone for each plane is $10,000 an hour. at a time went republican-controlled house is fighting to slash government spending, some say a no-fly zone in libya is not worth the price. >> cost is definitely going to be an issue.