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Boeing

Updated at 11 a.m. ET

As he moves into the chief executive's suite in Boeing's 36-story world headquarters building in downtown Chicago today, David Calhoun will find he has monumental tasks ahead of him.

The aerospace giant is still reeling from the fallout of two 737 Max jetliner crashes — in Indonesia in October 2018 and in Ethiopia last March — that killed a total of 346 people.

Updated at 12:15 p.m. ET

Dennis Muilenburg, the embattled CEO of Boeing, is resigning from his post, the aerospace giant announced Monday. The company says its board of directors has named David L. Calhoun, the current chairman, as successor.

Updated at 5:48 p.m. ET

The Federal Aviation Administration says it is temporarily grounding all Boeing 737 Max aircraft operated by U.S. airlines or in U.S. territory.

The announcement Wednesday afternoon follows decisions by many other countries to ground the planes after 157 people died in Sunday's crash of an Ethiopian Airlines 737 Max 8.

Earlier this week NASA announced that two private companies will build spaceships to take astronauts to the International Space Station. NASA hopes that both models will eventually be used by space tourists to get into orbit. Which got us wondering, which one would we rather fly in?

NASA has chosen Boeing and SpaceX to build the vehicles that will transport its astronauts to the International Space Station, putting the two American companies on a course to take over a job that NASA has recently relied upon Russia to perform: carrying out manned space flights.

NASA Administrator Charles Bolden says vehicles from the two companies are expected to be ready for service by 2017.

Announcing its decision Tuesday, the space agency included these details:

Jae C. Hong / AP Photo

NASA is a giant step closer to launching Americans again from U.S. soil.

On Tuesday, the space agency announced it has picked Boeing and SpaceX to transport astronauts to the International Space Station in the next few years.

NASA Administrator Charles Bolden named the winners of the competition at Kennedy Space Center, next door to where the launches should occur in a few years.