N140SC flew today in preparation for the CYGNSS launch

From Orbital's Twitter account:

N140SC © Orbital ATK

Our L-1011 #Stargazer lands in VAFB to conduct check outs for the upcoming #Pegasus launch of @NASA's #CYGNSS satellite

According to SpaceFlight Now website, the launch is now scheduled to take place on Nov. 21.

Twitter: Orbital ATK