Boeing and NASA officials
have scrubbed today’s launch attempt of NASA’s Mars Exploration Rover-B
“Opportunity” spacecraft aboard a Boeing Delta II rocket from Cape
Canaveral Air Force Station, Fla.

The cause of the scrub was due to shifting winds aloft in the Cape area
that affected the second launch window of 12:37:59 a.m. EDT today.

The first launch window of 11:56:16 p.m. EDT on June 28, was not utilized
due to a combination of toxic wind concerns and mariner activity in the launch
hazard area.

The next launch attempt will be today at 11:46:14 p.m. EDT. A second
launch opportunity exists at 12:28:07 a.m. on Monday, June 30, if necessary.

A unit of The Boeing Company, Integrated Defense Systems is one of the
world’s largest space and defense businesses. Headquartered in St. Louis,
Boeing Integrated Defense Systems is a $25 billion business. It provides
systems solutions to its global military, government and commercial customers.
It is a leading provider of intelligence, surveillance and reconnaissance; the
world’s largest military aircraft manufacturer; the world’s largest satellite
manufacturer and a leading provider of space-based communications; the primary
systems integrator for U.S. missile defense; NASA’s largest contractor; and a
global leader in launch services.