Day of Remembrance

Amy Resnik, sister-in-law, left, and Chuck Resnik, brother of the late space shuttle Challenger astronaut Judy Resnik, along with acting NASA Administrator Robert Lightfoot, third from left, lay a wreath at the Tomb of the Unknowns during NASA's Day of Remembrance, Thursday, Jan. 25, 2018, at Arlington National Cemetery in Arlington, Virginia. Wreaths were laid in memory of those men and women who lost their lives in the quest for space exploration. Photo Credit: (NASA/Bill Ingalls)