During a crew equipment interface test in the Orbiter Processing Facility bay 3 at NASA's Kennedy Space Center, STS-124 Commander Mark Kelly closely examines a window in the cockpit of space shuttle Discovery. The shuttle will transport the Kibo Japanese Experiment Module - Pressurized Module (JEM-PM) and the Japanese Remote Manipulator System (JEM-RMS) to the International Space Station to complete the Kibo laboratory. The launch of Discovery is targeted for April 24. Photo credit: NASA/Kim Shiflett