UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	July 21, 2021 4:00 P.M.

Form:	S-4
CIK: 0001819994 Company Name: Vector Acquisition Corp File Number: 333-257440
CIK: 0001849874 Company Name: Rocket Lab USA, Inc. File Number: 333-257440-01