English: A new viewing window recently installed on the Target Chamber of the National Ignition Facility (NIF) will allow members of the NIF team and visitors to see inside the chamber while it is vacuum-sealed for experiments. Installation of the viewing window was one of the many tasks performed by the NIF team during the spring 2011 facility maintenance and reconfiguration (FMR) period. During the FMR period, new diagnostic capabilities were added, controls system software was updated, and laser performance improvements were implemented. In the photo, NIF Team members Bruno Van Wonterghem (left), Jim Nally (pointing) and Rod Saunders watch through the viewing window as the Final Optics Damage Inspection System is deployed. NIF is located at Lawrence Livermore National Laboratory in northern California.