Happy National Punctuation Day, folks. http://www.nationalpunctuationday.com/ Bill William Litant communications director Aeronautics and Astronautics Department 33-240 Mass. Institute of Technology 77 Massachusetts Ave. Cambridge, MA 02139 USA 01-617-253-1564 http://www.mit.aero Twitter: @MITAeroAstro FB: MIT Aeronautics and Astronautics