Two NASA officials have weighed in on the public dispute over when and how to bring home Butch Wilmore and Suni Williams, who have been on the International Space Station since June.

A SpaceX mission was canceled on Wednesday to bring home a pair of astronauts who have been on the ISS since June.

Elon Musk visited the National Security Agency on Wednesday and met with NSA chief Gen. Timothy Haugh, an agency spokesperson confirmed to Axios. Why it matters: This is Musk's first recorded visit to an intelligence agency as a special adviser to the president.

The Wall Street Journal cited unnamed NSA officials, who say it “isn’t clear” whether Musk asked about any intelligence or military operations that may be deemed sensitive. Musk has a high-level security clearance,