 Tom Jones, the Payload Commander for this second flight of SRL, spent some time this morning explaining the importance of the radar's volcanic studies.Demonstrating with three common types of volcanic rock, Jones explained how the radar's various frequencies allow it to map lava and ash flows around volcanoes.The work one day may lead to a permanent radar platform in orbit for use in assisting predictions of impending volcanic eruptions and safeguarding people living near active volcanoes.