The crew of space shuttle Discovery is donning their orange partial pressure suits as they get ready to head out to Launch Pad 39A at NASA’s Kennedy Space Center in Florida where the shuttle stands ready to launch. Liftoff is scheduled for tonight at 11:59 EDT. Meteorologists at Kennedy and at mission control in Houston are keeping close eyes on the weather, but the forecast remains 60 percent "go" and the forecasters are looking for the conditions to improve as the night continues.