A tribute was held for Armstrong on September 13, at Washington National Cathedral, whose Space Window depicts the Apollo 11 mission and holds a sliver of Moon rock amid its stained-glass panels. In attendance were Armstrong's Apollo 11 crewmates, Collins and Aldrin; Gene Cernan, the Apollo 17 mission commander and last man to walk on the Moon; and former senator and astronaut John Glenn, the first American to orbit the Earth. In his eulogy, Charles Bolden praised Armstrong's "courage, grace, and humility". Cernan recalled Armstrong's low-fuel approach to the Moon: "When the gauge says empty, we all know there's a gallon or two left in the tank!" Diana Krall sang the song "Fly Me to the Moon". Collins led prayers. David Scott spoke, possibly for the first time, about an incident during their Gemini 8 mission: minutes before the hatch was to be sealed, a small chip of dried glue fell into the latch of his harness and prevented it from being buckled, threatening to abort the mission. Armstrong then called on Conrad to solve the problem, which he did, and the mission proceeded. "That happened because Neil Armstrong was a team player—he always worked on behalf of the team." Congressman Bill Johnson from Armstrong's home state of Ohio led calls for President Barack Obama to authorize a state funeral in Washington D.C. Throughout his lifetime, Armstrong shunned publicity and rarely gave interviews. Mindful that Armstrong would have objected to a state funeral, his family opted to have a private funeral in Cincinnati. On September 14, Armstrong's cremated remains were scattered in the Atlantic Ocean from the . Flags were flown at half-staff on the day of Armstrong's funeral.