Describes the fifty black sailors who refused to work in unsafe and unfair conditions after an explosion in Port Chicago killed 320 servicemen, and how the incident influenced civil rights. Interest Level: 5-8 Reading Level: 6.7 ATOS Book Level: 6.7 AR Interest Level: UG AR Points: 6 AR Quiz: 163116EN Reading Counts Level: 7.4 Reading Counts Points: 10 Lexile Measure: 950.