A malfunction during a drop test over Nevada last month for SpaceX’s Crew Dragon program has engineers re-examining the crew capsule’s parachutes, and Boeing has also encountered parachute failures during testing for its commercial crew capsule, a senior NASA official confirmed Wednesday.

SpaceX and its visionary founder Elon Musk win the lion’s share of public attention in the commercial rocket arena, with dramatic, increasingly routine booster landings and spectacular stunts like the launch of Musk’s Tesla Roadster on the maiden flight of the company’s new Falcon Heavy rocket last month.

The media briefing came after the agency formally pushed back the launch of the SpaceX Crew-9 mission to the International Space Station from mid-August to late-September.