NASA officials, family members and other invited guests listen to remarks during Kennedy Space Center's Day of Remembrance ceremony. From left to right are Kennedy Space Center Director Bob Cabana; contemporary Christian musician Brandon Heath; Apollo launch team member John Tribe; Sheryl Chaffee, daughter of Apollo 1 astronaut Roger Chaffee; astronaut Michael Collins; NASA Acting Administrator Robert Lightfoot; and astronaut Charlie Duke. Held this year in the Center for Space Education at the Kennedy Space Center Visitor Complex in Florida, the annual event honors the contributions of all astronauts who lost their lives in the quest for space exploration.