Sen. Bill Nelson explains the layout of the glass cockpit to John F. Kerry during a tour of the Orbiter Processing Facility.

Sen. Bill Nelson (right), D-Fla., explains the layout of the glass cockpit to Sen. John F. Kerry, D-Mass., on the flight deck of orbiter Discovery during a tour of the Orbiter Processing Facility (OPF). The “bunny suits” they are wearing are clean room attire required for anyone coming in close proximity to Discovery, currently being prepared for flight on the next Space Shuttle mission. The tour of the OPF follows a public meeting Kerry held at the Dr. Kurt H. Debus Conference Facility at the Kennedy Space Center Visitor Complex. He said he chose to speak at KSC because it symbolizes America’s commitment to science, innovation and technology. He and Sen. John Edwards, D-N.C., are on a speaking tour prior to their appearance at the Democratic National Convention in Boston.