Question: Where are the Zero Gravity Research Facility and the NASA Glenn Research Center located at?
Context: The Plum Brook Reactor was a NASA 60 megawatt water-cooled and moderated research nuclear reactor, located in Sandusky, Ohio, 50 mi west of the NASA Glenn Research Center (at that time the NASA Lewis Research Center) in Cleveland, of which it was organizationally a part.  The reactor was originally planned for the NACA nuclear airplane project, but after that was cancelled in 1961—by chance just before the initiation of the Apollo Project—it morphed into the primary NASA facility for space-related nuclear energy research and development, including scientific and technical investigations of nuclear energy for spaceflight propulsion, nuclear power systems, and radiation exposure.  The station included several large test facilities besides the reactor, including liquid hydrogen facilities for development and testing of the Centaur upper stage.  The reactor first went critical on 14 June 1971, and was finally shut down on 5 January 1973. NASA John H. Glenn Research Center at Lewis Field is a NASA center, located within the cities of Brook Park and Cleveland between Cleveland Hopkins International Airport and the Cleveland Metroparks's Rocky River Reservation, with a subsidiary facility in Sandusky, Ohio.  Its director is Janet L. Kavandi. Rocket Engine Test Facility was the name of a facility at the NASA Glenn Research Center, formerly known as the Lewis Research Center, in Ohio. Fast Probability Integration (FPI) is a software package designed to aid in probabilistic engineering analysis.  It was developed at the Southwest Research Institute for the NASA Lewis Research Center (now known as NASA Glenn Research Center). Peter B. Sunderland is Professor of Fire Protection Engineering and Keystone Professor at the University of Maryland, College Park.  He earned a Bachelor's Degree in Mechanical Engineering at Cornell University, a Master's Degree in Mechanical Engineering from the University of Massachusetts Amherst, and a Ph.D. in Aerospace Engineering from the University of Michigan.  Prior to joining the University of Maryland he worked at the National Center for Microgravity Research at the NASA Glenn Research Center. Dropping In Microgravity Environment (DIME) is an annual contest held by NASA's Glenn Research Center.  Teams of high school students, with one "faculty adviser", from anywhere in the United States or its territories can enter.  The teams prepare and submit proposals for research to be performed; four teams are selected to travel to the Glenn Research Center and perform their experiments at the Zero Gravity Research Facility, in the "drop tower", a deep shaft that can be completely depressurized and thus simulate microgravity when an object is in free fall in it.  A further four teams' experiments are selected and conducted by the Center staff.  The teams are responsible for writing their proposals, assembly of the necessary equipment if their experiments are chosen to be performed, testing of the setups at their respective homes, and preparation and submission of reports to NASA about their results. The Zero Gravity Research Facility at the NASA Glenn Research Center in Cleveland, Ohio is a unique facility designed to perform tests in a reduced gravity environment.  It has successfully supported research for the United States manned spacecraft programs and numerous unmanned projects.  The facility uses vertical drop tests in a vacuum chamber to investigate the behavior of components, systems, liquids, gases, and combustion in such circumstances. Dr. Woodrow Whitlow Jr. is the associate administrator for Mission Support at NASA.  He was appointed to this position by NASA administrator Charles Bolden on February 3, 2010.  Prior to this, he was director of the NASA Glenn Research Center in Cleveland Ohio. The NASA Academy is NASA's premiere leadership training program for undergraduate and graduate students.  Since its founding in 1993, the NASA Academy has brought together future leaders of the aerospace industry and exposed them to the inner workings of NASA, academia, and industry.  The Academy consists of a ten-week summer program hosted by a participating NASA center.  Currently there are academies at Ames Research Center, Marshall Space Flight Center and Glenn Research Center.  Goddard Space Flight Center and Dryden Flight Research Center previously hosted NASA Academies, as well. Olga D. González-Sanabria is a Puerto Rican scientist and inventor.  She is the highest ranking Hispanic at NASA Glenn Research Center, and a member of the Ohio Women's Hall of Fame.  González-Sanabria, Director of the Engineering and Technical Services, is responsible for planning and directing a full range of integrated services including engineering, fabrication, testing, facility management and aircraft services for the Glenn Research Center.  She played an instrumental role in the development of the "Long Cycle-Life Nickel-Hydrogen Batteries" which helps enable the International Space Station power system.
Answer: Cleveland, Ohio