NASA Administrator Charles Bolden also attended the service, which NASA live-streamed, along with other former NASA and military service members. Sen. John McCainJohn Sidney McCainGOP strategist donates to Alabama Democrat Meghan McCain knocks Bannon: 'Who the hell are you' to criticize Romney? Dems demand Tillerson end State hiring freeze, consult with Congress MORE (R-Ariz.) and Rob PortmanRobert (Rob) Jones PortmanMcConnell names Senate GOP tax conferees Overnight Finance: House approves motion to go to tax conference — with drama | GOP leaders to consider Dec. 30 spending bill | Justices skeptical of ban on sports betting | Mulvaney won't fire official who sued him How four GOP senators guided a tax-bill victory behind the scenes MORE (R-Ohio) were also there, and tweeted their respects.

Armstrong, the first man on the moon, died Aug. 25. He was 82.

He will be buried at sea by the Navy on Friday.