The GLAST LAT (Large Area Telescope) was tested extensively during the summer of 2006 at the U.S. Naval Research Laboratory in Washington, DC. The NRL also contributed to the GLAST project by managing the construction of the LAT Calorimeter. Note: This footage shows the LAT instrument in the cleanroom at the NRL. Scientist: Steven Ritz (NASA/GSFC). Platforms/Sensors/Data Sets: Fermi/LAT.