NASA Associate Administrator Bob Cabana, makes remarks during the Day of Remembrance on Jan. 26, 2023, at nearby Kennedy Space Center Visitor Complex in Florida. The event honored the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives in the pursuit of spaceflight. This year marks the 20th anniversary of the Columbia tragedy. This year’s ceremony was hosted by the Astronauts Memorial Foundation, which was founded after the shuttle Challenger accident in 1986 to honor the sacrifices of fallen astronauts each year.