A United Launch Alliance (ULA) Atlas V dual engine Centaur upper stage is in ULA’s factory in Decatur, Alabama on March 29, 2019. The dual engine upper stage is being prepared for Boeing’s CST-100 Starliner Crew Flight Test. Soon the upper stage will be assembled with the first stage booster and shipped aboard the company’s Mariner cargo ship to NASA’s Kennedy Space Center in Florida. Starliner and the Atlas V rockets that will launch the spacecraft, are key elements of NASA’s Commercial Crew Program to restore the capability to send astronauts to the International Space Station from U.S. soil.

Workers assemble a United Launch Alliance (ULA) Atlas V dual engine Centaur upper stage in ULA’s factory in Decatur, Alabama on March 29, 2019. The dual engine upper stage is being prepared for the first crew rotation mission of Boeing’s CST-100 Starliner to the International Space Station. Starliner and the Atlas V rockets that will launch the spacecraft, are key elements of NASA’s Commercial Crew Program to restore the capability to send astronauts to the space station from U.S. soil.

Workers assemble a United Launch Alliance (ULA) Atlas V dual engine Centaur upper stage in ULA’s factory in Decatur, Alabama on March 29, 2019. The dual engine upper stage is being prepared for the first crew rotation mission of Boeing’s CST-100 Starliner to the International Space Station. Starliner and the Atlas V rockets that will launch the spacecraft, are key elements of NASA’s Commercial Crew Program to restore the capability to send astronauts to the space station from U.S. soil.

Two United Launch Alliance (ULA) Atlas V dual engine Centaur upper stages are in production in ULA's factory in Decatur, Alabama on March 1, 2019. One is for Boeing’s Crew Flight Test on the CST-100 Starliner, and the other will be used for the first crew rotation mission on the Starliner. One of the Centaur upper stages will be assembled to the first stage booster. They will be shipped aboard the company’s Mariner cargo ship to NASA’s Kennedy Space Center in Florida. Starliner and the Atlas V rockets that will launch the spacecraft, are key to restoring the nation’s capability to send astronauts to the space station from U.S. soil with NASA’s Commercial Crew Program. NASA astronauts Mike Fincke and Nicole Mann, and Boeing astronaut Chris Ferguson will launch to the space station aboard the Starliner for the Crew Flight Test.

The United Launch Alliance (ULA) Crew Flight Test dual engine, at left, and the Orbital Flight test dual engine, at right, for the Centaur stage of the Atlas V rocket are in production on June 11, 2018, at ULA's factory in Decatur, Alabama. Boeing's CST-100 Starliner will launch on its first uncrewed flight test on the ULA Atlas V rocket. The Starliner is being developed and manufactured in partnership with NASA's Commercial Crew Program to return human spaceflight capabilities to the U.S.

The United Launch Alliance (ULA) Orbital Flight Test dual engine Centaur stage of the Atlas V rocket is in the final stage of production and checkout on May 22, 2018, at ULA's factory in Decatur, Alabama. Boeing's CST-100 Starliner will launch on its first uncrewed flight test on the ULA Atlas V rocket. The Starliner is being developed and manufactured in partnership with NASA's Commercial Crew Program to return human spaceflight capabilities to the U.S.

The United Launch Alliance (ULA) Atlas V first stage booster for the Crew Flight Test of Boeing’s CST-100 Starliner is in production in ULA's factory in Decatur, Alabama on March 1, 2019. Soon the booster will be assembled with the dual engine Centaur upper stage. They will be shipped aboard the company’s Mariner cargo ship to NASA’s Kennedy Space Center in Florida. Starliner and the Atlas V rockets that will launch the spacecraft, are key to restoring the nation’s capability to send astronauts to the space station from U.S. soil with NASA’s Commercial Crew Program. NASA astronauts Mike Fincke and Nicole Mann, and Boeing astronaut Chris Ferguson will launch to the space station aboard the Starliner for the Crew Flight Test.

A transport truck with a United Launch Alliance (ULA) two-engine Centaur upper stage arrives at the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

The United Launch Alliance (ULA) Mariner ship arrives at Port Canaveral in Florida carrying a two-engine Centaur upper stage for the upcoming uncrewed Orbital Flight Test of a Boeing CST-100 Starliner spacecraft. As part of NASA's Commercial Crew Program (CCP), the Starliner is part of the next generation of American spacecraft that will launch astronauts to the International Space Station. Starliner will launch early next year atop a ULA Atlas V rocket with the Centaur upper stage from Space Launch Complex 41 at Cape Canaveral Air Force Statin. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A transport truck moves a United Launch Alliance (ULA) two-engine Centaur upper stage from the company’s Mariner ship that just arrived at Port Canaveral in Florida. The Centaur will be transported to the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A truck transports a United Launch Alliance (ULA) two-engine Centaur upper stage from Port Canaveral in Florida to the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A transport truck with a United Launch Alliance (ULA) two-engine Centaur upper stage arrives at the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A transport truck moves a United Launch Alliance (ULA) two-engine Centaur upper stage from the company’s Mariner ship that just arrived at Port Canaveral in Florida. The Centaur will be transported to the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A transport truck moves a United Launch Alliance (ULA) two-engine Centaur upper stage from the company’s Mariner ship that just arrived at Port Canaveral in Florida. The Centaur will be transported to the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A transport truck with a United Launch Alliance (ULA) two-engine Centaur upper stage arrives at the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

A transport truck with a United Launch Alliance (ULA) two-engine Centaur upper stage arrives at the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.

The United Launch Alliance Atlas V rocket that will launch Boeing’s CST-100 Starliner on the Crew Flight Test (CFT) mission to the International Space Station for NASA’s Commercial Crew Program emerged from the factory on May 24, 2019, rolling into a giant cargo ship for transport to Cape Canaveral.

The United Launch Alliance Atlas V rocket that will launch Boeing’s CST-100 Starliner on the Crew Flight Test (CFT) mission to the International Space Station for NASA’s Commercial Crew Program emerged from the factory on May 24, 2019, rolling into a giant cargo ship for transport to Cape Canaveral.

The United Launch Alliance Atlas V rocket that will launch Boeing’s CST-100 Starliner on the Crew Flight Test (CFT) mission to the International Space Station for NASA’s Commercial Crew Program emerged from the factory on May 24, 2019, rolling into a giant cargo ship for transport to Cape Canaveral.

The United Launch Alliance Atlas V rocket that will launch Boeing’s CST-100 Starliner on the Crew Flight Test (CFT) mission to the International Space Station for NASA’s Commercial Crew Program emerged from the factory on May 24, 2019, rolling into a giant cargo ship for transport to Cape Canaveral.