A worker demonstrates an attachment point on ammonia tanks while STS-128 Mission Specialist John ``Danny'' Olivas.

In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a worker demonstrates an attachment point on ammonia tanks while STS-128 Mission Specialist John "Danny" Olivas (far right) looks on. The tanks are part of the payload for their upcoming STS-128 mission. Members of the STS-128 crew are at Kennedy for a crew equipment interface test, or CEIT, which provides hands-on training and observation of shuttle and flight hardware. The STS-128 flight will carry science and storage racks to the International Space Station on space shuttle Discovery. The STS-128 mission is targeted to launch on Aug. 6. Photo credit: NASA/Jim Grossmann