English: This graphic depicts the goal of NASA's Commercial Crew Program (CCP) heading into the Commercial Crew Transportation Capability contract known as CCtCap. This phase of the CCP will enable NASA to ensure a company's crew transportation system is safe, reliable and cost-effective. The certification process will assess progress throughout the production and testing of one or more integrated space transportation systems, which include rockets, spacecraft, missions and ground operations. Requirements under CCtCap also will include at least one crewed flight test to the space station before certification can be granted.