A construction worker with J.P. Donovan of Rockledge, Florida, checks to make sure new heat-resistant bricks attached to the north side of the flame trench are level at Launch Pad 39B at NASA’s Kennedy Space Center in Florida. The Pad B flame trench is being refurbished to support the launch of NASA’s Space Launch System rocket. The Ground Systems Development and Operations (GSDO) Program at Kennedy is helping transform the space center into a multi-user spaceport and prepare for Exploration Mission 1, deep space missions, and NASA's Journey to Mars. For more information about GSDO, visit: http://www.nasa.gov/groundsystems.