Updated: Fri, Jul 27, 2001, 6:45 PM ET (2245 GMT)
Originally Posted: Fri, Jul 27, 2001, 11:52 AM ET (1552 GMT)
Friday's scheduled launch of a Titan 4 carrying a military early-warning satellite has been delayed indefinitely after problems were found with the booster. The Titan 4B was scheduled to launch Friday at 4:08 am EDT (0808 GMT) and place into geosynchronous orbit the Defense Support Program DSP-21 satellite. However, launch officials decided late Thursday to delay the launch at least a day after problems were reported with the guidance system on the Titan 4B's second stage. The Air Force had tentatively rescheduled the launch for Saturday morning, but decided to push the launch back indefinitely while it removes the guidance unit and determines the nature of the problem. No new launch date will be announced until the problem with the guidance unit is resolved. DSP-21 is the latest in a series of military satellites designed to provide the military with early warning of missile launches and nuclear explosions worldwide.

Related Links:

•  Spaceflight Now launch status center
•  SPACE.com prelaunch article