Executing on Elon Musk’s wildest visions at SpaceX (SPCX) requires a lot of listening and a lot of “I’ll figure out how to get it all done.”

That’s according to one of SpaceX’s longest-serving executives, COO Gwynne Shotwell.

“First of all, when Elon says something, you have to pause and not immediately blurt out, ‘Well, that’s impossible,’ or, ‘There’s no way we’re going to do that. I don’t know how,'” Shotwell said in an April 2018 TED interview. “So you zip it, and you think about it, and you find ways to get that done.”

Shotwell detailed a realization she had that helped her improve her job satisfaction while delivering on Musk’s ambitions.

“So I always felt like my job was to take these ideas and kind of turn them into company goals, make them achievable, and kind of roll the company over from this steep slope, get it comfortable,” she said. “And I noticed every time I felt like we were there, we were rolling over, people were getting comfortable, Elon would throw something out there, and all of a sudden, we’re not comfortable, and we’re climbing that steep slope again. But then, once I realized that that’s his job, and my job is to get the company close to comfortable so he can push again and put us back on that slope, then I started liking my job a lot more, instead of always being frustrated.”

Shotwell joined SpaceX in 2002 as the company’s seventh employee, brought on board by Elon Musk as vice president of business development. She has been the operational backbone of the company ever since.

As president and COO of SpaceX, Shotwell has been the person who actually runs the day-to-day business, while Musk focuses on the grand vision. Her missions include managing the company’s 13,000-plus employees, overseeing all launch operations, and handling government and commercial customer relationships.

Continuing to execute at a high level for the soon-to-be-trillionaire Musk will be critical for Shotwell, with the added wrinkle of now having to deliver for public-market shareholders with sky-high expectations.

SpaceX is poised to be the largest initial public offering on record when it debuts on the Nasdaq Composite (^IXIC) on June 12. Current expectations are for the company to raise $75 billion at a valuation of $1.75 trillion.

The IPO has reportedly been four times oversubscribed, indicating strong demand to get a piece of Musk’s space vision.

According to the prospectus, revenue last year skyrocketed 33% year over year to $18.7 billion, fueled by a 32% surge in Starlink satellite internet sales. Starlink is a proven business that’s likely to stay strong well into the future.