During the 2018 Day of Remembrance at NASA's Kennedy Space Center, from eh left, State Sen. Thad Altman, president and CEO of the Astronauts Memorial Foundation, Therrin Protze, chief operating officer of Delaware North, and Center Director Bob Cabana place wreath at the Space Mirror Memorial. During the annual Day of Remembrance, spaceport employees and guests join others throughout NASA honoring the contributions of astronauts who have perished in the conquest of space.