Personnel prepare to mate the Transporter-Erector-Launcher, also called the TEL, carrying a Northrop Grumman Antares rocket to the launch mount on the Mid-Atlantic Regional Spaceport’s Pad 0A at NASA’s Wallops Flight Facility in Virginia. The Antares arrived at the launch pad on Tuesday, Feb. 16, in preparation for launch at 12:36 p.m. EST, Feb. 20, 2021. The launch will be Northrop Grumman’s 15th contracted cargo resupply mission with NASA to the International Space Station, carrying about 8,000 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Antares is carrying the company’s CRS-15 Cygnus cargo spacecraft named after NASA mathematician, Katherine Johnson, a Black woman who time and again broke through barriers of gender and race. Photo Credit: (NASA/Patrick Black)

A Northrop Grumman Antares rocket carrying a Cygnus resupply spacecraft is seen as it is rolled out of the Horizontal Integration Facility on its way to the Mid-Atlantic Regional Spaceport’s Pad-0A, Tuesday, Feb. 16, 2021, at NASA's Wallops Flight Facility in Virginia. Northrop Grumman’s 15th contracted cargo resupply mission with NASA to the International Space Station will deliver about 8,000 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. The CRS-15 Cygnus spacecraft is named after NASA mathematician, Katherine Johnson, a Black woman who time and again broke through barriers of gender and race. The launch is scheduled for 12:36 p.m. EST, Feb. 20, 2021. Photo Credit: (NASA/Patrick Black)

A Northrop Grumman Antares rocket carrying a Cygnus resupply spacecraft arrives at the Mid-Atlantic Regional Spaceport’s Pad-0A, Tuesday, Feb. 16, 2021, at NASA's Wallops Flight Facility in Virginia. Northrop Grumman’s 15th contracted cargo resupply mission with NASA to the International Space Station will deliver about 8,000 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. The CRS-15 Cygnus spacecraft is named after NASA mathematician, Katherine Johnson, a Black woman who time and again broke through barriers of gender and race. The launch is scheduled for 12:36 p.m. EST, Feb. 20, 2021. Photo Credit: (NASA/Patrick Black)