The Chandra X-ray Center is a collaborative effort between the Harvard-Smithsonian Center for Astrophysics, MIT, and TRW. The MIT/CXC group works closely with the MIT HETG and ACIS instrument teams. The MIT/CXC team is primarily responsible for: Scientific Research Maintaining an active research program, both with Chandra and other observatories, or in theoretical investigations. Spectroscopic Expertise Development and maintenance of resources necessary for scientific interpretation of Chandra transmission grating spectra. Analysis Software Emphasis is on the spectroscopic content in support of grating observations. Calibration Measurement and analyses necessary to determine and describe the in-flight performance of the HETG and its primary read-out detector (ACIS-S). Expert Support Provide technical support for HETG, LETG, or ACIS. Mission Planning Support mission planning as it pertains to HETG observations. HETGS Observation Planning Support Guest Observers in planning HETG observations. ACIS Operation Provide support for ACIS uplink and flight software.