I'm about to run out of credit http://www.pms.pt/homework-help-for-high-school-students/ custom papaers  Only after returning to earth and preparing for re-entry did the magnitude of the damage to the Apollo 13 service module become apparent. The exploding oxygen tank had shredded one entire quadrant of the service module; it was feared right up to splashdown that the explosion had also damaged the spacecraft's heat shield. Fortunately it had not, and the crew returned safely. Apollo 13 has come to be known as "NASA's finest hour" due to the resourcefulness demonstrated by engineers and management in returning the crew alive and unharmed.