From NBC's Jim Miklaszewski
The Pentagon reports that through March 28, the U.S. military operation has cost $550 million. The bulk of that is for munitions. The cost for the 199 Tomahawk missiles fired alone is somewhere between $220 to $298 million.
Pentagon officials say once NATO forces takeover the bulk of the mission, the U.S. military cost should be approximately $40 million over the next three weeks.