CAPE CANAVERAL, Fla. -- Maria Collura of NASA's Commercial Crew Program, or CCP, talks to aerospace industry representatives during a pre-proposal conference to inform prospective companies about the recently released request for contract proposals and updates to the certification requirements for crewed missions to the International Space Station, or ISS. The two-phase certification process, called Certification Products Contract, or CPC, will enable NASA to eventually purchase service missions to fly astronauts to and from the ISS. Collura serves as a CCP certification manager. To learn more about CCP, visit www.nasa.gov/commercialcrew. Photo credit: Kim Shiflett KSC-2012-5605