Chamber A Sealed (IMAGE) NASA/Goddard Space Flight Center Caption Chamber A's sealed, vault-like door towers over engineers at NASA's Johnson Space Center in Houston. Credit Credits: NASA/Chris Gunn Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.