HOUSTON - NASA will hold a pair of media briefings on Tuesday, March 27, to preview the upcoming exchange of crews aboard the International Space Station.

At 1 p.m. CDT, NASA will preview the upcoming Expedition 15 mission. A second briefing, set to begin at 2 p.m., will review the work done during the current Expedition 14 mission aboard the station. The briefings will originate from NASA's Johnson Space Center, Houston, and will be broadcast live on NASA Television. Questions will be taken from media at participating NASA sites. Reporters should call their preferred field center to confirm participation availability.